Surah An-Nisa (4:49)

أَلَمْ تَرَ إِلَى ٱلَّذِينَ يُزَكُّونَ أَنفُسَهُم بَلِ ٱللَّهُ يُزَكِّى مَن يَشَآءُ وَلَا يُظْلَمُونَ فَتِيلًا

Have you not seen those who declare themselves purified? Rather, it is Allah who purifies whom He wills, and they are not wronged in the least — not [even] as a twisted thread.

Roots in this verse: ر ا ي (rAy), ز ك و (zkw), ن ف س (nfs), ا ل ه (Alh), ش ي ا ($yA), ظ ل م (Zlm), ف ت ل (ftl)