Qur'an 2:97

قُلْ مَن كَانَ عَدُوًّا لِّجِبْرِيلَ فَإِنَّهُۥ نَزَّلَهُۥ عَلَىٰ قَلْبِكَ بِإِذْنِ ٱللَّهِ مُصَدِّقًا لِّمَا بَيْنَ يَدَيْهِ وَهُدًى وَبُشْرَىٰ لِلْمُؤْمِنِينَ

“Say, "Whoever is an enemy to Gabriel - it is [none but] he who has brought it [i.e., the Qur’ān] down upon your heart, [O Muḥammad], by permission of Allāh, confirming that which was before it and as guidance and good tidings for the believers."”

Al-Baqara 2:97 · Saheeh International