Read Ruku 139 of the Quran

وَٱتَّخَذَ قَوْمُ مُوسَىٰ مِنۢ بَعْدِهِۦ مِنْ حُلِيِّهِمْ عِجْلًۭا جَسَدًۭا لَّهُۥ خُوَارٌ ۚ أَلَمْ يَرَوْا۟ أَنَّهُۥ لَا يُكَلِّمُهُمْ وَلَا يَهْدِيهِمْ سَبِيلًا ۘ ٱتَّخَذُوهُ وَكَانُوا۟ ظَـٰلِمِينَ ﴿١٤٨﴾

And the people of Moses made, after [his departure], from their ornaments a calf - an image having a lowing sound. Did they not see that it could neither speak to them nor guide them to a way? They took it [for worship], and they were wrongdoers.

وَلَمَّا سُقِطَ فِىٓ أَيْدِيهِمْ وَرَأَوْا۟ أَنَّهُمْ قَدْ ضَلُّوا۟ قَالُوا۟ لَئِن لَّمْ يَرْحَمْنَا رَبُّنَا وَيَغْفِرْ لَنَا لَنَكُونَنَّ مِنَ ٱلْخَـٰسِرِينَ ﴿١٤٩﴾

And when regret overcame them and they saw that they had gone astray, they said, "If our Lord does not have mercy upon us and forgive us, we will surely be among the losers."

وَلَمَّا رَجَعَ مُوسَىٰٓ إِلَىٰ قَوْمِهِۦ غَضْبَـٰنَ أَسِفًۭا قَالَ بِئْسَمَا خَلَفْتُمُونِى مِنۢ بَعْدِىٓ ۖ أَعَجِلْتُمْ أَمْرَ رَبِّكُمْ ۖ وَأَلْقَى ٱلْأَلْوَاحَ وَأَخَذَ بِرَأْسِ أَخِيهِ يَجُرُّهُۥٓ إِلَيْهِ ۚ قَالَ ٱبْنَ أُمَّ إِنَّ ٱلْقَوْمَ ٱسْتَضْعَفُونِى وَكَادُوا۟ يَقْتُلُونَنِى فَلَا تُشْمِتْ بِىَ ٱلْأَعْدَآءَ وَلَا تَجْعَلْنِى مَعَ ٱلْقَوْمِ ٱلظَّـٰلِمِينَ ﴿١٥٠﴾

And when Moses returned to his people, angry and grieved, he said, "How wretched is that by which you have replaced me after [my departure]. Were you impatient over the matter of your Lord?" And he threw down the tablets and seized his brother by [the hair of] his head, pulling him toward him. [Aaron] said, "O son of my mother, indeed the people oppressed me and were about to kill me, so let not the enemies rejoice over me and do not place me among the wrongdoing people."

قَالَ رَبِّ ٱغْفِرْ لِى وَلِأَخِى وَأَدْخِلْنَا فِى رَحْمَتِكَ ۖ وَأَنتَ أَرْحَمُ ٱلرَّٰحِمِينَ ﴿١٥١﴾

[Moses] said, "My Lord, forgive me and my brother and admit us into Your mercy, for You are the most merciful of the merciful."