Virtues of the Qur'an
66/26. Chapter:
Forgetting the Qur'an. And can one say: “I forgot such and such a Verse?
وَقَوْلِ اللَّهِ تَعَالَى: {سَنُقْرِئُكَ فَلاَ تَنْسَى إِلاَّ مَا شَاءَ اللَّهُ}.
Sahih Bukhari
حَدَّثَنَا أَبُو نُعَيْمٍ، حَدَّثَنَا سُفْيَانُ، عَنْ مَنْصُورٍ، عَنْ أَبِي وَائِلٍ، عَنْ عَبْدِ اللَّهِ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " مَا لأَحَدِهِمْ يَقُولُ نَسِيتُ آيَةَ كَيْتَ وَكَيْتَ. بَلْ هُوَ نُسِّيَ ".
Narrated `Abdullah: The Prophet (ﷺ) said, "Why does anyone of the people say, 'I have forgotten such-and-such Verses (of the Qur'an)?' He, in fact, is caused (by Allah) to forget."
Reference : Sahih al-Bukhari 5039In-book reference : Book 66, Hadith 63USC-MSA web (English) reference : Vol. 6, Book 61, Hadith 559