Sunan Ibn Majah 32271
In-book no 2438حَدَّثَنَا مُحَمَّدُ بْنُ مَعْمَرٍ، حَدَّثَنَا رَوْحُ بْنُ عَوْفٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " مَا حَقُّ امْرِئٍ مُسْلِمٍ يَبِيتُ لَيْلَتَيْنِ وَلَهُ شَىْءٌ يُوصِي بِهِ إِلاَّ وَوَصِيَّتُهُ مَكْتُوبَةٌ عِنْدَهُ " .
It was narrated from Ibn 'Umar that the Prophet (ﷺ) said: “The Muslim man has no right to spend two nights, if he has something for which will should be made, without having a written will with him.”