Sahih Muslim 4207
صحيح مسلم#4207Sahihحَدَّثَنَا هَارُونُ بْنُ مَعْرُوفٍ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ وَهْبٍ، أَخْبَرَنِي عَمْرٌو، - وَهْوَ ابْنُ الْحَارِثِ - عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمٍ، عَنْ أَبِيهِ، أَنَّهُ سَمِعَ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " مَا حَقُّ امْرِئٍ مُسْلِمٍ لَهُ شَىْءٌ يُوصِي فِيهِ يَبِيتُ ثَلاَثَ لَيَالٍ إِلاَّ وَوَصِيَّتُهُ عِنْدَهُ مَكْتُوبَةٌ " . قَالَ عَبْدُ اللَّهِ بْنُ عُمَرَ مَا مَرَّتْ عَلَىَّ لَيْلَةٌ مُنْذُ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ذَلِكَ إِلاَّ وَعِنْدِي وَصِيَّتِي .
Salim reported on the authority of his father ('Abdullah b. Umar) that he (his father) had heard Allah's Messenger (ﷺ) as saying:It is not proper for a Muslim who has got something to bequeathe to spend even three nights without having his will written down with him regarding it. 'Abdullah b. 'Umar (Allah be pleased with them) said: Ever since I heard Allah's Messenger (ﷺ) say this I have not spent a night without having my will (written) along with me
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: 25:4