عَنِ ابْنِ عُمَرَ رَضِيَ اللَّهُ عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَا حَقُّ امْرِئٍ مُسْلِمٍ لَهُ شَيْءٌ يُوصَى فِيهِ يَبِيتُ لَيْلَتَيْنِ إِلَّا وَوَصِيَّة مَكْتُوبَة عِنْده»
Wills. Ibn ‘Umar reported God’s Messenger as saying, “It is the duty of a Muslim man who has something which is to be given as a bequest not to have it for two nights without having his will written regarding it.” (Bukhari and Muslim.)
Source: Mishkat al-Masabih — repository translation · Al-Khatib Al-Tabrizi — authenticity/grade metadata requires independent source review · Sunnah.comAudio not available for the selected reciter.
Source: Mishkat al-Masabih — repository arabic · Al-Khatib Al-Tabrizi · Sunnah.com