44. Duhan · Verse 3

سورة الدخان
3

إِنَّآ أَنزَلۡنَٰهُ فِي لَيۡلَةٖ مُّبَٰرَكَةٍۚ إِنَّا كُنَّا مُنذِرِينَ

We sent it down during a Blessed Night: for We (ever) wish to warn (against Evil).