Surat An-Najm - سورة النجم

الَّذِينَ يَجْتَنِبُونَ كَبَائِرَ الْإِثْمِ وَالْفَوَاحِشَ إِلَّا اللَّمَمَ ۚ إِنَّ رَبَّكَ وَاسِعُ الْمَغْفِرَةِ ۚ هُوَ أَعْلَمُ بِكُمْ إِذْ أَنشَأَكُم مِّنَ الْأَرْضِ وَإِذْ أَنتُمْ أَجِنَّةٌ فِي بُطُونِ أُمَّهَاتِكُمْ ۖ فَلَا تُزَكُّوا أَنفُسَكُمْ ۖ هُوَ أَعْلَمُ بِمَنِ اتَّقَىٰ

Muhsin Khan: Those who avoid great sins (see the Quran, Verses: 6:152,153) and Al-Fawahish (illegal sexual intercourse, etc.) except the small faults, verily, your Lord is of vast forgiveness. He knows you well when He created you from the earth (Adam), and when you were fetuses in your mothers' wombs. So ascribe not purity to yourselves. He knows best him who fears Allah and keep his duty to Him [i.e. those who are Al-Muttaqun (pious - see V.2:2)].