Ibn ‘Abbas said:

The Prophet ﷺ used to seek refuge in Allah for al-Hasan and al-Husain, saying ; I seek refuge for both of you in the perfect words of Allah from every devil and every poisonous thing and from the evil eye which influences. He would then say; your father sought refuge in Allah by them for Ismail and Ishaq.

Abu Dawud said; this is a proof of the fact that the Quran is not created.

حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنِ الْمِنْهَالِ بْنِ عَمْرٍو، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ : كَانَ النَّبِيُّ ﷺ يُعَوِّذُ الْحَسَنَ وَالْحُسَيْنَ : " أُعِيذُكُمَا بِكَلِمَاتِ اللَّهِ التَّامَّةِ مِنْ كُلِّ شَيْطَانٍ وَهَامَّةٍ وَمِنْ كُلِّ عَيْنٍ لاَمَّةٍ " . ثُمَّ يَقُولُ : " كَانَ أَبُوكُمْ يُعَوِّذُ بِهِمَا إِسْمَاعِيلَ وَإِسْحَاقَ " . قَالَ أَبُو دَاوُدَ : هَذَا دَلِيلٌ عَلَى أَنَّ الْقُرْآنَ لَيْسَ بِمَخْلُوقٍ .