(26) بَابُ نِسْيَانِ الْقُرْآنِ وَهَلْ يَقُولُ نَسِيتُ آيَةَ كَذَا وَكَذَا
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 5039
In-book reference: Book 66, Hadith 63
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 6, Book 61, Hadith 559