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 is compelling evidence for 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

"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

"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 entire Quran and the pattern holds: 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 naẓm 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.

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.