To recommend the Book of Allah عز وجل

Narrated Talha:

I asked 'Abdullah bin Abi 'Aufa, "Did the Prophet 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 did not make any will?" He said, "He made a will wherein he recommended Allah's Book."

حَدَّثَنَا مُحَمَّدُ بْنُ يُوسُفَ، حَدَّثَنَا مَالِكُ بْنُ مِغْوَلٍ، حَدَّثَنَا طَلْحَةُ، قَالَ 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.