I asked ʿAbdullah bin Abi ʿAufa, "Did the Prophet ﷺ make a will (to appoint his successor or bequeath wealth)?" He replied, "No." I said, "How is it prescribed then for the people to make wills, and they are ordered to do so while the Prophet ﷺ did not make any will?" He said, "He made a will wherein he recommended Allah's Book."  

سَأَلْتُ عَبْدَ اللَّهِ بْنَ أَبِي أَوْفَى أَوْصَى النَّبِيُّ ﷺ فَقَالَ لاَ فَقُلْتُ كَيْفَ كُتِبَ عَلَى النَّاسِ الْوَصِيَّةُ أُمِرُوا بِهَا وَلَمْ يُوصِ قَالَ أَوْصَى بِكِتَابِ اللَّهِ