Amir bin Sa'd ibn Abi Waqqas عامر بن سعد بن أبي وقاص · The Book of Wills

"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."

"It is not right for a Muslim who has anything concerning which a will should be made, to abide for more than three nights without having a written will with him."

"I asked Ibn Abi Awfa: 'Did the Messenger of Allah leave a will?' He said: 'No.' I said: 'How come it is prescribed for the Muslims to make wills?' He said: 'He left instructions urging the Muslims to adhere to the Book of Allah.'"

"The Messenger of Allah did not leave behind a Dirham or a Dinar, or a sheep or a camel, and he did not leave any will."