The early and later generations disagreed over whether many rulings were exclusive to him. This includes their disagreement over fay’ and the one-fifth share: were they his personal property or not? And were women who had been forbidden to him (1) made lawful for him or not?
The early generations did not disagree that his estate was not inherited, because this was clearly established from him and widely transmitted among his Companions.
This is because Allah, Most High, said in His Book:
“They ask you about the spoils. Say, ‘The spoils belong to Allah and the Messenger.’”
[Surah al-Anfāl: 1]
He also said in [His Book] (2):
“Know that, of whatever spoils you acquire, one-fifth belongs to Allah, the Messenger, close relatives, orphans, the needy, and the wayfarer.”
[Surah al-Anfāl: 41]
[And He said in His Book:
“Whatever Allah has restored to His Messenger from the people of the towns belongs to Allah, the Messenger, close relatives, orphans, the needy, and the wayfarer.”] (3)
[Surah al-Hashr: 7]
The wording of the verse concerning fay’ parallels that of the verse concerning the one-fifth share. Surah al-Anfāl was revealed in connection with Badr, so battle spoils are unquestionably included. The wording may also include all other property of the disbelievers that Allah granted to the Muslims. Likewise, the term fay’ may mean everything Allah has restored to the Muslims, in which case it includes battle spoils; or it may refer specifically to what Allah restored to him without the Muslims (4) having spurred on either horses or riding camels to obtain it.
An example of the former usage (5) is the Prophet’s statement—may Allah bless him and grant him peace—: “I have no share in what Allah has restored