Qur’anic Root A M S
Yesterday and the recent past: from recalling an earlier event to sudden changes in life and human judgment
Qur’anic and lexical forms
بِالْأَمْسِ
(bi-l-amsi)
The sole Qur’anic form: temporal bi-, definite article and genitive noun; four occurrences
أَمْس
(ams)
Nominal lemma “yesterday”; lexicographical entry A M S, without a family of Qur’anic verbs
أَمْسِ
(amsi)
Articleless form with invariant kasrah in familiar Hijazi usage
الْأَمْسُ / الْأَمْسَ / الْأَمْسِ
(al-amsu / al-amsa / al-amsi)
Definite forms, ordinarily inflected, with reported poetic variations
أَمْسًا
(amsan)
Indefinite accusative in the lexical example “every tomorrow becomes yesterday”; not Qur’anic
أَمْسُنا
(amsunā)
Lexical example in a possessive construction: “our yesterday”; not Qur’anic
In Arabic, ams names the day preceding the present day: “yesterday.” Its direct meaning identifies a particular day, but broader uses can also express the recent past or an elapsed time.
The Qur’an uses this word four times, always as bi-l-amsi. Two occurrences in Moses’ story concern an event on the previous day. The third, in Qārūn’s story, recalls a recent time when people desired his wealth and position. The fourth, in Yūnus, belongs to a parable of worldly life’s impermanence: flourishing land is suddenly devastated, as though it had not flourished just yesterday.
These four uses show that ams does more than date an event. Sometimes it identifies a specific temporal interval; sometimes recalling the recent past reveals the severity of a change in circumstances.
The word’s meaning must nevertheless remain distinct from these stories’ moral implications. Ams does not inherently mean regret, impermanence, error, or heedlessness. These ideas may occur in context, but the word primarily identifies a past time.
1. Qur’anic forms and grammatical status
Ams occurs four times in four Qur’anic verses, with only one principal form:
- Bi-l-amsi in Yūnus 10:24.
- Bi-l-amsi in Al-Qaṣaṣ 28:18.
- Bi-l-amsi in Al-Qaṣaṣ 28:19.
- Bi-l-amsi in Al-Qaṣaṣ 28:82.
In each occurrence, bi-l-amsi comprises three elements: the preposition bi-, the definite article al-, and the noun ams.
Bi- has a temporal meaning here, approximately “on the previous day” or “yesterday.”
Bi-l-amsi therefore does not itself mean “by means of yesterday” or “because of yesterday.” In these verses, it specifies the day or time when something occurred.
Morphologically, ams is a temporal noun, rather than a past-tense verb, the verbal noun of a common verb, or an active participle.
Following Arabic lexicographical practice, this study discusses the word under the entry A M S. The Quranic Arabic Corpus, however, records its four occurrences under the independent nominal lemma ams, without a triliteral root tag. This classification should not be taken as evidence for a family of derived verbs in Qur’anic Arabic.
All four Qur’anic uses represent the same temporal noun.
Its basic meaning is:
The day preceding the present day or the day under discussion; more broadly, the recent past or an elapsed time contrasted with the present situation.
This definition distinguishes two levels: “yesterday” as a precise calendar reference and “yesterday” as a reference to the past.
Both are known in Arabic, but context must determine which applies.
2. Ams in early Arabic: yesterday and the day that does not return
The direct meaning of amsi
In its familiar Arabic use, amsi names the day immediately preceding today.
If someone says jiʾtu amsi, “I came yesterday,” on a particular day, they mean they came the previous day.
Like al-yawm, “today,” and ghad, “tomorrow,” the word relates to the speaker’s temporal position.
Al-yawm is the present day.
Ams is the preceding day.
Ghad is the following day.
Their referents therefore change with the time of speaking.
The day called today will become ams tomorrow. The Arabic expression kullu ghadin ṣāʾirun amsan conveys the same point: every tomorrow eventually becomes yesterday.
Ams therefore does not simply name a fixed calendar date. It expresses the preceding day’s relationship to the present.
Yesterday contrasted with today
A line by Ziyād Al-Aʿjam reads:
رَأَيْتُكَ أَمْسَ خَيْرَ بَنِي مَعَدٍّ
وَأَنْتَ الْيَوْمَ خَيْرٌ مِنْكَ أَمْسِ
raʾaytuka amsa khayra banī maʿaddin / wa-anta al-yawma khayrun minka amsi
“Yesterday I saw you as the best of the descendants of Maʿadd; today you are better even than you were yesterday.”
Ams occurs twice in this line, contrasted with al-yawm, “today.”
The poet compares someone’s condition at two times: yesterday and today.
The word can therefore compare successive conditions without those conditions having an inherent positive or negative value.
Here, the change is positive: the person is described as better today than yesterday.
In Qārūn’s story, however, people who desired his position yesterday change their judgment after seeing his fate.
“Yesterday” identifies only the earlier time. Whether the change is good or bad comes from the sentence’s content.
Ziyād Al-Aʿjam was an Umayyad poet; this is not a securely dated pre-revelation witness. The transmitted final vowel of ams also varies or is inconsistently printed: some versions have amsa in the first occurrence, while others have amsi. This line alone cannot establish an undisputed pronunciation.
Another witness: al-amsi alongside al-yawm
A poem attributed to Nuṣayb, an Umayyad poet associated with the court of ʿAbd Al-ʿAzīz ibn Marwān, contains the following; this witness too postdates the Qur’an’s revelation:
وَإِنِّي وَقَفْتُ الْيَوْمَ وَالْأَمْسِ قَبْلَهُ
بِبَابِكَ حَتَّىٰ كَادَتِ الشَّمْسُ تَغْرُبُ
wa-innī waqaftu al-yawma wa-l-amsi qablahu / bi-bābika ḥattā kādati al-shamsu taghrubu
“Today, and yesterday before it, I stood at your gate until the sun was about to set.”
The line also has grammatical significance.
Al-yawm and al-ams occur together, both indicating when the standing took place.
Transmissions vary at the beginning of the line, including waqaftu, “I stood,” ḥubistu, “I was detained,” ẓaliltu, “I remained,” and nawaytu, “I intended.” Both al-amsi and al-amsa are also transmitted, with different grammatical analyses.
Despite these differences, the word’s presence alongside al-yawm and its temporal meaning are clear.
The poet refers to two successive days, consistent with the direct meaning “yesterday.”
Does ams always mean precisely the previous day?
Ordinary Arabic usage refers to the preceding day.
When ams extends beyond its precise calendar meaning, however, it can express a past contrasted with today or the current situation.
For example, “yesterday he possessed something, and today he does not” need not always mean that the change occurred within precisely twenty-four hours.
Sometimes a speaker emphasizes the past’s nearness: a past still fresh in memory.
English “yesterday” can likewise be used in this broader sense.
This figurative extension should not lead us to discard the precise previous-day meaning in every sentence.
The sequence of events in Al-Qaṣaṣ 28:18 and Al-Qaṣaṣ 28:19 shows that bi-l-amsi refers to the preceding day.
In Yūnus 10:24 and Al-Qaṣaṣ 28:82, a figurative reference to the recent past is more prominent as a possibility.
3. The grammar of amsi and al-amsi
Ams belongs to the Arabic temporal nouns with distinctive grammatical properties.
When amsi occurs without the definite article or a possessive construction, referring to the particular previous day, familiar Hijazi usage gives it an invariant final kasrah, -i.
Its final vowel therefore need not change with its grammatical function.
For example, jāʾa amsi and raʾaytuhu amsi can occur with the same ending: “yesterday came” and “I saw him yesterday.”
Some Banū Tamīm usage differs, giving ams another inflected form in particular grammatical positions.
One pronunciation should therefore not be attributed without exception to all early Arabic dialects.
When al- is added
Ordinarily, when ams takes the definite article al-, it behaves like an inflected noun.
For example:
Maḍā al-amsu bi-mā fīhi: “Yesterday passed, with all it contained.”
Marartu bi-l-amsi: “I passed by yesterday.”
In certain poetic witnesses, however, even the form with al- retains an invariant kasrah.
Early lexicographers and grammarians disagreed over the analysis of such forms.
These differences show why Arabic examples should not all be reduced to a single oversimplified rule.
The structure of the four Qur’anic occurrences
All four Qur’anic occurrences have the form bi-l-amsi.
Bi- is a preposition governing the genitive.
Al-amsi is a definite temporal noun.
In the usual grammatical analysis, the noun is genitive after the preposition, while the phrase bi-l-amsi specifies time.
The final kasrah in these four forms alone cannot settle every historical disagreement over whether ams is invariant or inflected: kasrah also accords with the genitive construction here.
The main point for translation is clearer: in all four cases, the phrase indicates when an event or earlier condition occurred.
Does al- change the word’s meaning?
Some linguistic explanations distinguish amsi without the article from al-ams.
They associate the first more closely with a particular yesterday and the second, at times, with a broader past.
This distinction appears in some witnesses and uses, but should not be made absolute.
All four Qur’anic occurrences have al-, yet Al-Qaṣaṣ 28:18 and Al-Qaṣaṣ 28:19 have a particularly close, specific temporal reference.
The article alone therefore does not exclude the precise meaning “yesterday.”
The sentence’s construction and the sequence of events provide the final criterion.
4. Ka-an lam taghna bi-l-amsi: flourishing land that seems never to have flourished yesterday
Yūnus states:
إِنَّمَا مَثَلُ الْحَيَاةِ الدُّنْيَا كَمَاءٍ أَنْزَلْنَاهُ مِنَ السَّمَاءِ فَاخْتَلَطَ بِهِ نَبَاتُ الْأَرْضِ مِمَّا يَأْكُلُ النَّاسُ وَالْأَنْعَامُ حَتَّىٰ إِذَا أَخَذَتِ الْأَرْضُ زُخْرُفَهَا وَازَّيَّنَتْ وَظَنَّ أَهْلُهَا أَنَّهُمْ قَادِرُونَ عَلَيْهَا أَتَاهَا أَمْرُنَا لَيْلًا أَوْ نَهَارًا فَجَعَلْنَاهَا حَصِيدًا كَأَنْ لَمْ تَغْنَ بِالْأَمْسِ كَذَٰلِكَ نُفَصِّلُ الْآيَاتِ لِقَوْمٍ يَتَفَكَّرُونَ
innamā mathalu al-ḥayāti al-dunyā ka-māʾin anzalnāhu mina al-samāʾi fa-khtalaṭa bihi nabātu al-arḍi mimmā yaʾkulu al-nāsu wa-l-anʿāmu ḥattā idhā akhadhati al-arḍu zukhrufahā wa-zzayyanat wa-ẓanna ahluhā annahum qādirūna ʿalayhā atāhā amrunā laylan aw nahāran fa-jaʿalnāhā ḥaṣīdan ka-an lam taghna bi-l-amsi ka-dhālika nufaṣṣilu al-āyāti li-qawmin yatafakkarūna
“The likeness of worldly life is that of water We sent down from the sky, through which the earth’s vegetation mingled and grew, providing food for people and livestock. When the earth had taken on its adornment and become beautiful, and its people thought they had power over it, Our command came upon it by night or day. We made it like a harvested field, as though it had not flourished just yesterday. Thus We explain the signs for people who reflect.”
Yūnus 10:24
The verse compares worldly life to land whose plants grow when water reaches it.
The land gradually becomes green and adorned. Its people think they control the produce of this growth and can enjoy it.
The situation then changes.
What was green and flourishing disappears; the land becomes as though nothing had grown there before.
Bi-l-amsi occurs within this scene.
What time does ams express here?
In its direct meaning, ams is the previous day.
This parable, however, does more than identify a calendar date.
It describes a process beginning with rain, continuing through growth and the land’s adornment, and then changing suddenly.
Growth and adornment may take longer than twenty-four hours. That alone, however, does not prove that “yesterday” is figurative: the land could have continued flourishing until the day before its destruction.
The contrast between earlier flourishing and sudden devastation also permits a figurative reference to the recent past in ka-an lam taghna bi-l-amsi, without excluding the direct previous-day meaning.
“Yesterday” emphasizes the nearness and freshness of that condition against the present destruction.
It is as though what was recently full of life and beauty has disappeared so completely that no trace of its earlier presence remains.
Ams itself, however, does not mean sudden destruction.
The sudden change comes from the sequence of events and the verse’s other expressions.
Distinguishing taghna from ams
Ka-an lam taghna bi-l-amsi contains two concepts.
Taghna belongs to GH N Y and here concerns flourishing, remaining established, or being present in a place.
It should not be equated here with financial wealth.
Bi-l-amsi specifies the earlier time.
The phrase therefore means more than “as though it was not there yesterday”: it conveys “as though it had not flourished and stood there just yesterday.”
Omitting taghna from the translation weakens the image of earlier flourishing.
Conversely, translating ams merely as “the past” may fail to convey the expression’s temporal nearness.
Does the Qur’an announce the permanent destruction of every flourishing place?
The verse offers a parable about worldly life’s impermanence and changing conditions of flourishing and enjoyment.
It does not mean that every field or garden must be destroyed that same night or day after becoming green.
An image is used to clarify a broader truth.
Nor does the verse imply that cultivating the earth, farming, or benefiting from natural blessings is worthless.
It itself speaks of growth, food for people and livestock, and the earth’s beauty.
What it questions is absolute human confidence in retaining and controlling these benefits.
Within this image, ams recalls a recent past that can quickly become separated from present circumstances.
5. Alladhī istanṣarahu bi-l-amsi: the same man from the previous day in Moses’ story
Al-Qaṣaṣ states:
فَأَصْبَحَ فِي الْمَدِينَةِ خَائِفًا يَتَرَقَّبُ فَإِذَا الَّذِي اسْتَنْصَرَهُ بِالْأَمْسِ يَسْتَصْرِخُهُ قَالَ لَهُ مُوسَىٰ إِنَّكَ لَغَوِيٌّ مُبِينٌ
fa-aṣbaḥa fī al-madīnati khāʾifan yataraqqabu fa-idhā alladhī istanṣarahu bi-l-amsi yastaṣrikhuhu qāla lahu mūsā innaka la-ghawiyyun mubīn
“Moses then entered the morning in the city, fearful and watchful. Suddenly, the same man who had sought his help yesterday was again crying out to him for aid. Moses said to him: You are clearly astray.”
Al-Qaṣaṣ 28:18
Here, bi-l-amsi refers to a particular event in Moses’ story.
In Al-Qaṣaṣ 28:15, Moses enters the city and finds two men fighting.
One belongs to his group; the other is among his enemies.
The man from Moses’ group seeks his help. Moses strikes the other man, causing his death.
In the following verses, Moses speaks about his deed and asks The God for forgiveness.
Al-Qaṣaṣ 28:18 then depicts the next day.
How bi-l-amsi identifies the person
Bi-l-amsi does more than date an event here: it also helps identify someone.
Alladhī istanṣarahu bi-l-amsi refers to the same man who sought Moses’ help the previous day.
The description tells the reader that the person in the new scene is not an unknown figure. He was involved in the previous day’s episode.
Bi-l-amsi therefore clarifies the temporal relationship between the two events.
The direct meaning “yesterday” is appropriate: the story continues from one day’s incident to a renewed request for help the following day.
Fa-aṣbaḥa and bi-l-amsi
The verse begins with fa-aṣbaḥa.
Here, the verb expresses entering the morning or being in the morning situation.
Bi-l-amsi recalls the previous day’s event alongside it.
Two temporal markers therefore occur in one verse: the new morning and the previous day’s incident.
Together they clarify the close sequence of events.
Ams itself does not mean morning. Morning comes from aṣbaḥa.
Likewise, istanṣarahu and yastaṣrikhuhu concern requesting help and crying out for aid, rather than the meaning of A M S.
Each word makes its own distinct contribution.
6. Ka-mā qatalta nafsan bi-l-amsi: recalling the previous day’s killing
The next verse states:
فَلَمَّا أَنْ أَرَادَ أَنْ يَبْطِشَ بِالَّذِي هُوَ عَدُوٌّ لَهُمَا قَالَ يَا مُوسَىٰ أَتُرِيدُ أَنْ تَقْتُلَنِي كَمَا قَتَلْتَ نَفْسًا بِالْأَمْسِ إِنْ تُرِيدُ إِلَّا أَنْ تَكُونَ جَبَّارًا فِي الْأَرْضِ وَمَا تُرِيدُ أَنْ تَكُونَ مِنَ الْمُصْلِحِينَ
fa-lammā an arāda an yabṭisha bi-lladhī huwa ʿaduwwun lahumā qāla yā mūsā a-turīdu an taqtulanī ka-mā qatalta nafsan bi-l-amsi in turīdu illā an takūna jabbāran fī al-arḍi wa-mā turīdu an takūna mina al-muṣliḥīna
“When Moses intended to strike the man who was an enemy to them both, someone said: Moses, do you intend to kill me as you killed someone yesterday? You want only to be a tyrant in the land; you do not want to be among those who set things right.”
Al-Qaṣaṣ 28:19
Bi-l-amsi recalls the same previous-day event described in Al-Qaṣaṣ 28:15.
The preceding verse identified the man who had sought Moses’ help yesterday.
This verse speaks of someone being killed that same day.
The two occurrences in Al-Qaṣaṣ 28:18 and Al-Qaṣaṣ 28:19 therefore do not concern wholly unrelated episodes. Both refer back to the previous day’s events.
This contextual connection strengthens the precise translation “yesterday.”
Who is speaking?
The verse itself does not name the speaker after qāla, “he said.”
In one reading, the man who sought Moses’ help the previous day becomes frightened by his stern words, thinks Moses intends to attack him, and therefore recalls the earlier killing.
In another reading, the man whom Moses intends to confront says these words.
The disagreement concerns the subject of qāla and the sequence of the two men’s conduct.
It does not fundamentally alter the meaning of bi-l-amsi.
In either reading, the speaker refers to the previous day’s killing.
Resolving the speaker’s identity should therefore not turn al-ams into an indefinite or remote past.
Does “yesterday” itself mean reproach?
No.
The speaker critically recalls the previous day’s killing.
The reproach comes from a-turīdu an taqtulanī, “do you intend to kill me?”, and the rest of the speech.
Bi-l-amsi identifies only the earlier event’s time.
The same word can occur in praise, as in Ziyād Al-Aʿjam’s verse, or in blame, as here.
Ams therefore does not inherently judge an earlier deed’s moral value.
Two occurrences within one temporal sequence
Al-Qaṣaṣ 28:18 and Al-Qaṣaṣ 28:19 clearly illustrate ams as a precise temporal reference.
The first confrontation occurs on one day.
The following day, the same man again seeks help, and the earlier killing is recalled.
“Yesterday” here is neither a vague metaphor nor merely a name for the distant past.
These uses prevent us from translating every Qur’anic occurrence as “the past” merely because al-ams has figurative force elsewhere.
7. Tamannaw makānahu bi-l-amsi: a changed judgment about Qārūn
Al-Qaṣaṣ 28:82 states:
وَأَصْبَحَ الَّذِينَ تَمَنَّوْا مَكَانَهُ بِالْأَمْسِ يَقُولُونَ وَيْكَأَنَّ اللَّهَ يَبْسُطُ الرِّزْقَ لِمَنْ يَشَاءُ مِنْ عِبَادِهِ وَيَقْدِرُ لَوْلَا أَنْ مَنَّ اللَّهُ عَلَيْنَا لَخَسَفَ بِنَا وَيْكَأَنَّهُ لَا يُفْلِحُ الْكَافِرُونَ
wa-aṣbaḥa alladhīna tamannaw makānahu bi-l-amsi yaqūlūna wayka-anna allāha yabsuṭu al-rizqa li-man yashāʾu min ʿibādihi wa-yaqdiru law-lā an manna allāhu ʿalaynā la-khasafa binā wayka-annahu lā yufliḥu al-kāfirūna
“Those who had desired his position yesterday were now saying: Ah! The God expands provision for whichever of His servants He wills, and restricts it. Had The God not favored us, He would have caused the earth to swallow us too. Ah! The disbelievers do not prosper.”
Al-Qaṣaṣ 28:82
The verse concerns people who had previously wished to occupy Qārūn’s position.
In Al-Qaṣaṣ 28:79, Qārūn appears before his people in his adornment and splendor.
Those who desire worldly life wish they had been given the like of what he possessed.
Al-Qaṣaṣ 28:81, however, describes Qārūn and his house being swallowed by the earth.
After this event, those same people express a different judgment.
Bi-l-amsi: yesterday or the recent past?
Bi-l-amsi refers to the time when these people desired Qārūn’s position.
It can be translated “yesterday,” since the narrative clearly contrasts the earlier situation with the new one.
The verse itself, however, does not precisely date the intervals between Qārūn’s appearance in splendor, his being swallowed by the earth, and the people’s speech.
Aṣbaḥa can express entering the morning; in some Arabic uses, it also means entering a new condition.
Aṣbaḥa together with bi-l-amsi therefore does not prove that all the events necessarily occurred on two successive days with an exactly calculable interval.
Conversely, no long interval should be assumed without reason.
“Yesterday” is natural in the base translation and preserves the close contrast. The explanation can clarify that the expression also allows reference to the recent past.
A change in human judgment
Initially, some people desired Qārūn’s position.
After his fate became apparent, the same group voices its understanding and expresses relief at having escaped his fate.
People can therefore consider something a source of happiness at one time, then revise their earlier judgment when its consequences become clear.
This conclusion comes from the entire story, rather than ams’s lexical meaning.
Ams places the recent past against the new situation.
Tamannaw expresses their earlier wish.
Yaqūlūna reports what they now say.
Qārūn’s fate in the preceding verse explains why their outlook changes.
Does “yesterday” here mean only regret?
No.
The verse concerns more than personal remorse. These people also speak of provision being expanded or restricted, and of the disbelievers’ outcome.
Bi-l-amsi therefore cannot be translated directly as “with regret.”
Regret and revised judgment occur in context, but the word itself names a time.
Nor should the story be reduced to the claim that every wealthy person is like Qārūn, or that every financial advantage proves its possessor’s wrongdoing.
The verse itself attributes expansion and restriction of provision to The God’s will.
Wealth alone is therefore not the final measure of someone’s rightness or corruption.
The condemnation in Qārūn’s story concerns how he handles wealth, power, and others’ rights.
8. Two temporal uses of al-ams in the Qur’an
Reading the four verses together reveals two principal uses of bi-l-amsi.
Yesterday as a particular preceding day
In Al-Qaṣaṣ 28:18 and Al-Qaṣaṣ 28:19, al-ams identifies a particular day in Moses’ story.
The verses belong to one narrative sequence, with the earlier event clearly identified.
“Yesterday” is a direct, precise equivalent here.
Merely translating it “in the past” weakens the temporal nearness and connection between the two incidents.
Yesterday as a recent, comparable past
In Yūnus 10:24 and Al-Qaṣaṣ 28:82, al-ams can have a broader function.
In Yūnus, flourishing land changes so completely that it seems not to have flourished just yesterday.
In Al-Qaṣaṣ, those who desired Qārūn’s position yesterday now speak differently.
Both contrast the past with a new situation.
The direction of that contrast, however, differs.
In Yūnus, flourishing becomes devastation.
In Al-Qaṣaṣ, the desire to share Qārūn’s wealth becomes recognition of the danger of his situation.
Ams therefore does not itself name change. It makes comparison between an earlier and a present condition possible.
Nor should every occurrence of bi-l-amsi with the article be declared figurative, and every amsi without it literal.
Context decides.
10. Translation proposals for Forqan
The principal English equivalent of ams is “yesterday.”
It is concise and natural, and can likewise figuratively express the recent past where appropriate.
The base translation should retain this equivalent as far as possible in all four Qur’anic uses.
The explanation for each verse should clarify whether it identifies a particular preceding day or refers more broadly to the recent past.
Yūnus 10:24
For ka-an lam taghna bi-l-amsi, the proposed translation is:
“As though it had not flourished just yesterday.”
This preserves the temporal meaning of al-ams and taghna’s sense of remaining established and flourishing.
“As though it had never flourished before” conveys the substance too, but weakens the image of a nearby past.
Al-Qaṣaṣ 28:18
For alladhī istanṣarahu bi-l-amsi, the proposed translation is:
“The same man who had sought his help yesterday.”
“In the past” is inappropriate in place of “yesterday” here, because the sequence identifies a particular time.
Al-Qaṣaṣ 28:19
For ka-mā qatalta nafsan bi-l-amsi, the proposed translation is:
“As you killed someone yesterday.”
This conveys nafsan as “someone” and bi-l-amsi as “yesterday.”
The speaker’s identity should likewise not be inserted into the translation without conclusive grounds.
Al-Qaṣaṣ 28:82
For alladhīna tamannaw makānahu bi-l-amsi, the proposed translation is:
“Those who had desired his position yesterday.”
This preserves the contrast between earlier and present circumstances.
The explanation can add that “yesterday” may refer to the recent past here, without necessarily fixing an exact interval.
11. Conclusion
Ams is an Arabic temporal noun whose direct meaning identifies the day preceding the present day.
Broader uses can express the recent past or elapsed time, especially when a speaker compares an earlier condition with a new one.
Grammatically, early Arabic amsi follows distinctive rules. In familiar usage, its articleless form has an invariant kasrah; adding al- or placing it in a possessive construction usually gives it ordinary inflection. Dialectal and poetic differences are also recorded.
The Qur’an uses the word four times, always as bi-l-amsi.
In Al-Qaṣaṣ 28:18 and Al-Qaṣaṣ 28:19, “yesterday” identifies a particular day in Moses’ story. The occurrences belong to one closely connected narrative and specify the earlier request for help and killing.
In Yūnus 10:24, “yesterday” belongs to the parable of flourishing land that is then devastated. The recent past contrasts with the sudden change in circumstances.
In Al-Qaṣaṣ 28:82, the word recalls when people desired Qārūn’s wealth and position. Their judgment changes after his fate becomes apparent.
These four uses show that ams can precisely date an event or provide a linguistic means of contrasting the past with present circumstances.
The word itself, however, does not contain meanings of regret, destruction, changed opinion, or error. These come from each verse’s verbs, speakers, and events.
Nor should ams be confused with amsā, “entered the evening,” or amassa, “caused contact.” Similar spelling and proposed derivations cannot replace independent examination of each word’s structure and meaning.
Forqan’s final definition of A M S:
“Ams names the day preceding the present day or the reference day in speech: yesterday. More broadly, it can express the recent past or an elapsed time, particularly when earlier circumstances are measured against the present. All four Qur’anic occurrences have the form bi-l-amsi. In Moses’ story, a particular previous day is intended; in the parable of worldly life and Qārūn’s story, reference to the recent past and its contrast with new circumstances also becomes prominent. Each event’s moral value and consequences come from context, rather than the word itself.”