Sunan Ibn Majah, Volume 3, Book 22, Hadith 2696 (DarusSalam) ⓘ

It was narrated from Malik bin Mighwal that Talhah bin Musarrif said: “I said to Abdullah bin Abu Awfa: 'Did the Messenger of Allah make a will concerning anything?' He said: 'No.' I said: 'How come he told the Muslims to make wills?' He said: 'He enjoined (them to adhere to) the book of Allah (SWT).” Malik said: “Talhah bin Musarrif said: 'Huzail bin Shurahbil said: “Abu Bakr was granted leadership according to the will of Allah's Messenger?” (Rather) Abu Bakr wished that the found a covenant (in that regard) from Allah's Messenger, so he could fetter his nose with a (camel's) nose ring.”

حَدَّثَنَا عَلِيُّ بْنُ مُحَمَّدٍ، حَدَّثَنَا وَكِيعٌ، عَنْ مَالِكِ بْنِ مِغْوَلٍ، عَنْ طَلْحَةَ بْنِ مُصَرِّفٍ، قَالَ قُلْتُ لِعَبْدِ اللَّهِ بْنِ أَبِي أَوْفَى أَوْصَى رَسُولُ اللَّهِ صلى الله عليه وسلم بِشَىْءٍ قَالَ لاَ ‏.‏ قُلْتُ فَكَيْفَ أَمَرَ الْمُسْلِمِينَ بِالْوَصِيَّةِ قَالَ أَوْصَى بِكِتَابِ اللَّهِ ‏.‏