79:18
An-Nazi'at 18
Surah An-Nazi'at (النازعات), verse 18 — reference 79:18. Arabic text with optional translation and free audio on Al-Qalam.
فَقُلْ هَل لَّكَ إِلَىٰٓ أَن تَزَكَّىٰ
faqul hal laka ilā an tazakkā
And say to him, 'Would you [be willing to] purify yourself