Surah Al-A'raf, ayah 143

وَلَمَّا جَآءَ مُوسَىٰ لِمِيقَٰتِنَا وَكَلَّمَهُۥ رَبُّهُۥ قَالَ رَبِّ أَرِنِيٓ أَنظُرۡ إِلَيۡكَۚ قَالَ لَن تَرَىٰنِي وَلَٰكِنِ ٱنظُرۡ إِلَى ٱلۡجَبَلِ فَإِنِ ٱسۡتَقَرَّ مَكَانَهُۥ فَسَوۡفَ تَرَىٰنِيۚ فَلَمَّا تَجَلَّىٰ رَبُّهُۥ لِلۡجَبَلِ جَعَلَهُۥ دَكّٗا وَخَرَّ مُوسَىٰ صَعِقٗاۚ فَلَمَّآ أَفَاقَ قَالَ سُبۡحَٰنَكَ تُبۡتُ إِلَيۡكَ وَأَنَا۠ أَوَّلُ ٱلۡمُؤۡمِنِينَ ١٤٣

Walammā jā'a mūsā limīqātinā wakallamahū rabbuhū qāla rabbi arinī anzur ilayka qāla lan tarānī walākininzur ilal-jabali fa inistaqarra makānahū fasawfa tarānī falammā tajallā rabbuhū lil-jabali ja'alahū dakkan wakharra mūsā sa'iqan falammā afāqa qāla subhānaka tubtu ilayka wa ana awwalul-mu'minīn

And when Moses arrived at Our appointed time and his Lord spoke to him, he said, "My Lord, show me [Yourself] that I may look at You." [Allāh] said, "You will not see Me,⁴⁰¹ but look at the mountain; if it should remain in place, then you will see Me." But when his Lord appeared to the mountain, He rendered it level,⁴⁰² and Moses fell unconscious. And when he awoke, he said, "Exalted are You! I have repented to You, and I am the first [among my people] of the believers."⁴⁰³