Surah Al-Baqarah 2:54

وَإِذْ قَالَ مُوسَىٰ لِقَوْمِهِۦ يَـٰقَوْمِ إِنَّكُمْ ظَلَمْتُمْ أَنفُسَكُم بِٱتِّخَاذِكُمُ ٱلْعِجْلَ فَتُوبُوٓا۟ إِلَىٰ بَارِئِكُمْ فَٱقْتُلُوٓا۟ أَنفُسَكُمْ ذَٰلِكُمْ خَيْرٌ لَّكُمْ عِندَ بَارِئِكُمْ فَتَابَ عَلَيْكُمْ ۚ إِنَّهُۥ هُوَ ٱلتَّوَّابُ ٱلرَّحِيمُ

And [recall] when Moses said to his people, "O my people, indeed you have wronged yourselves by your taking of the calf [for worship]. So repent to your Creator and kill yourselves [i.e., the guilty among you]. That is best for [all of] you in the sight of your Creator." Then He accepted your repentance; indeed, He is the Accepting of Repentance, the Merciful.

Translation: Saheeh International

Tafsir

And when Moses said to his people those who worshipped the calf ‘My people you have done wrong against yourselves by your taking the golden calf for a god; now turn to your Creator away from that worship of the calf and slay one another that is let the innocent of you slay the guilty; …

Excerpt from Tafsir al-Jalalayn, commentary on 2:54, via Quran.com. The reader has the full commentary and 9 more tafsirs.