(Annisa) 4 : 49
أَلَمْ تَرَ إِلَى الَّذِينَ يُزَكُّونَ أَنْفُسَهُمْ ۚ بَلِ اللَّهُ يُزَكِّي مَنْ يَشَاءُ وَلَا يُظْلَمُونَ فَتِيلًا
Haven’t you seen into those who are purifying themselves? But Lord Allah is purifying anyone He wishes, and they will not be dealt unjustly a little bit.