قُل مَن كانَ عَدُوًّا لِجِبريلَ فَإِنَّهُ نَزَّلَهُ عَلىٰ قَلبِكَ بِإِذنِ اللَّهِ مُصَدِّقًا لِما بَينَ يَدَيهِ وَهُدًى وَبُشرىٰ لِلمُؤمِنينَ

Say, "Whoever is an enemy to Gabriel - it is [none but] he who has brought the Qur'an down upon your heart, [O Muhammad], by permission of Allah, confirming that which was before it and as guidance and good tidings for the believers."