سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 3616
The Book of Wills
It Is Disliked To Delay Making A Will
أَخْبَرَنَا مُحَمَّدُ بْنُ سَلَمَةَ، قَالَ حَدَّثَنَا ابْنُ الْقَاسِمِ، عَنْ مَالِكٍ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ مَا حَقُّ امْرِئٍ مُسْلِمٍ لَهُ شَىْءٌ يُوصَى فِيهِ يَبِيتُ لَيْلَتَيْنِ إِلاَّ وَوَصِيَّتُهُ مَكْتُوبَةٌ عِنْدَهُ .
It was narrated from Ibn 'Umar that the Messenger of Allah said: "It is not befitting for a Muslim who has anything concerning which a will should be made, to abide for two nights without having a written will with him."
Sunan an-Nasa'i, 3616sahih (Darussalam)