Muḥammad b. ʿUbayd > ʿUbaydullāh > Nāfiʿ > Ibn ʿUmar

The Messenger of Allah ﷺ as saying: It is the duty of a Muslim man who has something which is to be given as bequest not to have it for two nights without having his will written regarding it. – Sound Chain

حَدَّثَنَا مُحَمَّدُ بْنُ عُبَيْدٍ أَخْبَرَنَا عُبَيْدُ اللَّهِ عَنْ نَافِعٍ عَنْ ابْنِ عُمَرَ

أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ «مَا حَقُّ امْرِئٍ مُسْلِمٍ يَبِيتُ لَيْلَتَيْنِ وَلَهُ شَيْءٌ يُوصِي فِيهِ إِلَّا وَوَصِيَّتُهُ مَكْتُوبَةٌ عِنْدَهُ» – إسناده صحيح