Hadith 1
The Book of Wills
It was narrated from Salim bin 'Abdullah, from his father, that the Messenger of Allah said:
"It is not right for a Muslim who has anything concerning which a will should be made, to abide for more than three nights without having a written will with him."
أَخْبَرَنَا أَحْمَدُ بْنُ يَحْيَى بْنِ الْوَزِيرِ بْنِ سُلَيْمَانَ، قَالَ سَمِعْتُ ابْنَ وَهْبٍ، قَالَ أَخْبَرَنِي يُونُسُ، وَعَمْرُو بْنُ الْحَارِثِ، عَنِ ابْنِ شِهَابٍ، عَنْ سَالِمِ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِيهِ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ
مَا حَقُّ امْرِئٍ مُسْلِمٍ لَهُ شَىْءٌ يُوصَى فِيهِ فَيَبِيتُ ثَلاَثَ لَيَالٍ إِلاَّ وَوَصِيَّتُهُ عِنْدَهُ مَكْتُوبَةٌ
Hadith gradings, numbering and translations can differ between editions. For legal rulings or detailed interpretation, consult qualified scholarship and the referenced edition.