Surah An-Nisa Verse 49 - English Translation by Farook Malik
Surah An-Nisaأَلَمۡ تَرَ إِلَى ٱلَّذِينَ يُزَكُّونَ أَنفُسَهُمۚ بَلِ ٱللَّهُ يُزَكِّي مَن يَشَآءُ وَلَا يُظۡلَمُونَ فَتِيلًا
Have you not seen those who speak very highly of their own purity even though they are committing shirk. In fact, Allah purifies whom He wishes. If the pagans are not purified, no injustice - even equal to the thread of a date-stone - is being done to them