Sahih Muslim 1840
صحيح مسلم#1840Sahihحَدَّثَنَا زُهَيْرُ بْنُ حَرْبٍ، وَمُحَمَّدُ بْنُ الْمُثَنَّى، وَعُبَيْدُ اللَّهِ بْنُ سَعِيدٍ، قَالُوا حَدَّثَنَا يَحْيَى، وَهُوَ الْقَطَّانُ ح وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا أَبُو خَالِدٍ الأَحْمَرُ، ح وَحَدَّثَنَا ابْنُ نُمَيْرٍ، حَدَّثَنَا أَبِي كُلُّهُمْ، عَنْ عُبَيْدِ اللَّهِ، ح وَحَدَّثَنَا ابْنُ أَبِي عُمَرَ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنْ أَيُّوبَ، ح وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا يَعْقُوبُ يَعْنِي ابْنَ عَبْدِ الرَّحْمَنِ، ح وَحَدَّثَنَا مُحَمَّدُ بْنُ إِسْحَاقَ الْمُسَيَّبِيُّ حَدَّثَنَا أَنَسٌ، - يَعْنِي ابْنَ عِيَاضٍ - جَمِيعًا عَنْ مُوسَى بْنِ عُقْبَةَ، كُلُّ هَؤُلاَءِ عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ . بِمَعْنَى حَدِيثِ مَالِكٍ وَزَادَ فِي حَدِيثِ مُوسَى بْنِ عُقْبَةَ " وَإِذَا قَامَ صَاحِبُ الْقُرْآنِ فَقَرَأَهُ بِاللَّيْلِ وَالنَّهَارِ ذَكَرَهُ وَإِذَا لَمْ يَقُمْ بِهِ نَسِيَهُ "
This hadith has been narrated by Ibn 'Umar from the Messenger of Allah (ﷺ), but in the hadith transmited by Musa b. 'Uqba, this addition is made:" When one who had committed the Qur'an to memory (or who is familiar with it) gets up (for night prayer) and recites it night and day, it remains fresh in his mind, but if he does not get up (for prayer and thus does not recite it) he forgets it
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 6:268