2:51
وَإِذْ وَٰعَدْنَا مُوسَىٰٓ أَرْبَعِينَ لَيْلَةً ثُمَّ ٱتَّخَذْتُمُ ٱلْعِجْلَ مِنۢ بَعْدِهِۦ وَأَنتُمْ ظَـٰلِمُونَ
wa-idh wāʿadnā mūsā arbaʿīna laylatan thumma ittakhadhtumu l-ʿij'la min baʿdihi wa-antum ẓālimūna
We appointed forty nights for Moses [on Mount Sinai] and then, while he was away, you took to worshipping the calf- a terrible wrong.
And (remember) when We appointed for Mûsâ (Moses) forty nights, and (in his absence) you took the calf (for worship), and you were Zâlimûn (polytheists and wrong-doers).