Surah Al-An'am 6:160

مَن جَآءَ بِٱلْحَسَنَةِ فَلَهُۥ عَشْرُ أَمْثَالِهَا ۖ وَمَن جَآءَ بِٱلسَّيِّئَةِ فَلَا يُجْزَىٰٓ إِلَّا مِثْلَهَا وَهُمْ لَا يُظْلَمُونَ

Whoever comes [on the Day of Judgement] with a good deed will have ten times the like thereof [to his credit], and whoever comes with an evil deed will not be recompensed except the like thereof; and they will not be wronged.

Translation: Saheeh International

Tafsir

Whoever brings a good deed that is the affirmation of ‘there is no god but God’ shall receive tenfold the like of it that is the reward for ten good deeds and whoever brings an evil deed shall only be requited the like of it that is its appropriate requital; …

Excerpt from Tafsir al-Jalalayn, commentary on 6:160, via Quran.com. The reader has the full commentary and 9 more tafsirs.