"It is not befitting for a Muslim to abide for three nights without having his will with him." 'Abdullah bin 'Umar said: "Since I heard this from the Messenger of Allah, I have always had my will with me." (Using translation from Nasāʾī 3618)
أَنَّ النَّبِيَّ ﷺ قَالَ «مَا حَقُّ امْرِئٍ مُسْلِمٍ يَمُرُّ عَلَيْهِ ثَلَاثُ لَيَالٍ إِلَّا وَعِنْدَهُ وَصِيَّتُهُ» قَالَ عَبْدُ اللهِ بْنُ عُمَرَ مَا مَرَّتْ عَلَيَّ لَيْلَةٌ مُنْذُ سَمِعْتُ رَسُولَ اللهِ ﷺ قَالَ ذَلِكَ إِلَّا وَعِنْدِي وَصِيَّتِي