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Surah 2. Al-Baqara
Ayah 63 - 64
63 وَإِذْ أَخَذْنَا مِيثَـٰقَكُمْ وَرَفَعْنَا فَوْقَكُمُ ٱلطُّورَ خُذُوا۟ مَآ ءَاتَيْنَـٰكُم بِقُوَّةٍ وَٱذْكُرُوا۟ مَا فِيهِ لَعَلَّكُمْ تَتَّقُونَ
64 ثُمَّ تَوَلَّيْتُم مِّنۢ بَعْدِ ذَٰلِكَ ۖ فَلَوْلَا فَضْلُ ٱللَّهِ عَلَيْكُمْ وَرَحْمَتُهُۥ لَكُنتُم مِّنَ ٱلْخَـٰسِرِينَ
[63-64] Call to mind the .time when We raised above you the Tur and made a covenant with you,81 saying, "Hold fast to the Book which We are giving you and bear in mind the commands and precepts contained therein. It is expected that this will lead you on to the paths of virtue and piety." But even after that you forsook the Covenant: nevertheless Allah did not withhold His grace and mercy from you; otherwise you would have been utterly ruined long before this.
81The way this incident has been described at different places in the Qur'an, shows that it was at that time a well known incident among the Israelites, but now it is difficult to understand and know what actually happened. One may, however, understand that at the time of making the covenant at the foot of the mountain a dreadful situation was created and it so appeared that the mountain was going to fall upon them. A similar scene has been depicted in Surah AI-A'raf, VII: 171. (Please see E.N. 132 of VII, Al-A'raf) Although its description in the Bible is a little different from that of the Talmud, it depicts the scene very vividly: "And mount Sinai was altogether on a smoke, because the Lord descended upon it in fire: and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked greatly." (Exodus, 19: 18.) "And all the people saw the thunderings, and the lightnings, and the noise of the trumpet, and the mountain smoking : and when the people saw it, they removed, and stood afar off. And they said unto Moses, Speak thou with us, and we will hear : but let not God speak with us, lest we die." (Exodus, 20 :1819).