وَإِذ واعَدنا موسىٰ أَربَعينَ لَيلَةً ثُمَّ اتَّخَذتُمُ العِجلَ مِن بَعدِهِ وَأَنتُم ظالِمونَ

We summoned Moses for forty nights, and in his absence, you took to worshiping the calf and were wrongdoers.