Verse 51

وَإِذْ وَٰعَدْنَا مُوسَىٰٓ أَرْبَعِينَ لَيْلَةً ثُمَّ ٱتَّخَذْتُمُ ٱلْعِجْلَ مِنۢ بَعْدِهِۦ وَأَنتُمْ ظَـٰلِمُونَ

And when We gave an audience to Moses for forty nights, subsequently you preferred the calf instead, right after he left. And it was you who were transgressors.