Chapter 7, Verse 144

And when Moses came at Our appointed time and his Lord spoke to him, he said, ‘My Lord, show Thyself to me that I may look at Thee.’ He replied, ‘Thou shalt not see Me, but look at the mountain; if it remains in its place, then shalt thou see Me.’ And when his Lord manifested Himself on the mountain, He broke it into pieces and Moses fell down unconscious. And when he recovered, he said, ‘Holy art Thou, I turn towards Thee, and I am the first to believe.’