Al-A'raf 7:143 ولما جاء موسى لميقاتنا وكلمه ربه قال رب ارني انظر اليك قال لن تراني ولاكن انظر الى الجبل فان استقر مكانه فسوف تراني فلما تجلى ربه للجبل جعله دكا وخر موسى صعقا فلما افاق قال سبحانك تبت اليك وانا اول المومنين ١٤٣

When Mūsā came at Our appointed time and his Lord spoke to him, he said, “My Lord, show (Yourself) to me that I may look at You.” He said: “You shall never see Me. But look at the mount. If it stays at its place, you will see Me.” So when his Lord appeared to the Mount, He made it smashed, and Mūsā fell down unconscious. When he recovered, he said: “Pure are You. I repent to You, and I am the first to believe (that no one can see You in this world.)”