One letter, opposite meanings: why the Quran uses 'wind' in both singular and plural

Classical scholars noticed a pattern that looks, at first glance, like a minor grammatical detail, but on closer reading fits well with al-Jurjani's thesis that nothing in the Quran's form is arbitrary. It concerns the Arabic word for "wind": رِيح (rīḥ, singular) versus رِيَاح (riyāḥ, plural).

Ibn al-Qayyim's observation

The 14th-century scholar Ibn al-Qayyim al-Jawziyya recorded the pattern, tracing it to a report from the companion Ubayy ibn Kaʿb: "Everything in the Quran with 'winds' (plural) is a mercy; everything with 'wind' (singular) is a punishment."

The verses side by side

Punishment — singular:

إِنَّا أَرْسَلْنَا عَلَيْهِمْ رِيحًا صَرْصَرًا فِي يَوْمِ نَحْسٍ مُسْتَمِرٍّ

Innā arsalnā ʿalayhim rīḥan ṣarṣaran fī yawmi naḥsin mustamirr

"Indeed, We sent upon them a screaming wind on a day of continuous misfortune." (Surah al-Qamar 54:19) — on the destruction of the people of ʿĀd.

Mercy — plural:

وَمِنْ آيَاتِهِ أَنْ يُرْسِلَ الرِّيَاحَ مُبَشِّرَاتٍ وَلِيُذِيقَكُمْ مِنْ رَحْمَتِهِ

Wa min āyātihī an yursila r-riyāḥa mubashshirātin wa li-yudhīqakum min raḥmatihī

"And among His signs is that He sends the winds as bearers of good tidings, to let you taste of His mercy." (Surah ar-Rum 30:46)

Why this can't be coincidence

Search the Quran and the pattern holds in most cases: wherever "wind" brings destruction, punishment, or hardship, the singular is used; wherever "wind" brings rain, relief, or mercy, the plural is used. Translations that ignore this distinction — and many do, since "wind(s)" carries no semantic weight in most other languages — drop exactly the detail that al-Jurjani's theory of nadhm identifies as the heart of the matter: grammatical form isn't decoration, it carries meaning itself. Swap the singular for the plural in the verse about ʿĀd, and the text would — grammatically correct but semantically incoherent — describe a devastating event as a dispersed, plural "good" breeze.

There are exceptions: in Yūnus 10:22 a good wind (rīḥ ṭayyiba) is mentioned in the singular, and in Ṣād 38:36 the wind that served Sulaymān. The pattern is a striking tendency, not a rule without exceptions.

Why destructive wind is singular

Classical commentators point to a further reason: unity and force. A destructive wind strikes concentrated, as a single overwhelming force; rain-bearing winds, by contrast, work precisely through their dispersal — across fields, clouds, and directions at once. The singular/plural distinction thus carries not only a moral charge (punishment/mercy) but a physical one too: concentrated versus dispersed.