Forgetting the Qur'an. And can one say: “I forgot such and such a Verse? Sahih al-Bukhari 5037
Arabic hadith text
حَدَّثَنَا رَبِيعُ بْنُ يَحْيَى، حَدَّثَنَا زَائِدَةُ، حَدَّثَنَا هِشَامٌ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتْ سَمِعَ النَّبِيُّ صلى الله عليه وسلم رَجُلاً يَقْرَأُ فِي الْمَسْجِدِ فَقَالَ " يَرْحَمُهُ اللَّهُ لَقَدْأَذْكَرَنِي كَذَا وَكَذَا آيَةً مِنْ سُورَةِ كَذَا ".
Translation
Narrated Aisha
The Prophet (ﷺ) heard a man reciting the Qur'an in the mosque and said, "May Allah bestow His Mercy on him, as he has reminded me of such-and-such Verses of such a Surah."