عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُمَا عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ مَا حَقُّ امْرِئٍ يَبِيتُ لَيْلَتَيْنِ وَلَهُ مَالٌ يُرِيدُ أَنْ يُوصِيَ فِيهِ إِلَّا وَوَصِيَّتُهُ مَكْتُوبَةٌ عِنْدَهُ
Narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) said: Whoever possesses wealth and wishes to make a will regarding it, it is not appropriate for him to let two nights pass except that his will should be written and kept with him.