Sunan an-Nasa'i 3618
سنن النسائي#3618Sahihأَخْبَرَنَا يُونُسُ بْنُ عَبْدِ الأَعْلَى، قَالَ أَنْبَأَنَا ابْنُ وَهْبٍ، قَالَ أَخْبَرَنِي يُونُسُ، عَنِ ابْنِ شِهَابٍ، قَالَ فَإِنَّ سَالِمًا أَخْبَرَنِي عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " مَا حَقُّ امْرِئٍ مُسْلِمٍ تَمُرُّ عَلَيْهِ ثَلاَثُ لَيَالٍ إِلاَّ وَعِنْدَهُ وَصِيَّتُهُ ". قَالَ عَبْدُ اللَّهِ بْنُ عُمَرَ مَا مَرَّتْ عَلَىَّ مُنْذُ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ذَلِكَ إِلاَّ وَعِنْدِي وَصِيَّتِي.
It was narrated from 'Abdullah bin 'Umar that the Prophet said:"It is not befitting for a Muslim to abide for three nights without having his will with him." 'Abdullah bin 'Umar said: "Since I heard this from the Messenger of Allah, I have always had my will 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:
In-book reference: 30:8