37:138
As-Saffat 138
Surah As-Saffat (الصافات), verse 138 — reference 37:138. Arabic text with optional translation and free audio on Al-Qalam.
وَبِٱلَّيْلِ ۗ أَفَلَا تَعْقِلُونَ
wabi-al-layli afalā taʿqilūna
And at night. Then will you not use reason?