One-fifth of Booty to the Cause of Allah (Khumus)

Bukhari :: Book 4 :: Volume 53 :: Hadith 325

Narrated 'Aisha:

(mother of the believers) After the death of Allah 's Apostle Fatima the daughter of Allah's Apostle asked Abu Bakr As-Siddiq to give her, her share of inheritance from what Allah's Apostle had left of the Fai (i.e. booty gained without fighting) which Allah had given him. Abu Bakr said to her, "Allah's Apostle said, 'Our property will not be inherited, whatever we (i.e. prophets) leave is Sadaqa (to be used for charity)." Fatima, the daughter of Allah's Apostle got angry and stopped speaking to Abu Bakr, and continued assuming that attitude till she died. Fatima remained alive for six months after the death of Allah's Apostle.

She used to ask Abu Bakr for her share from the property of Allah's Apostle which he left at Khaibar, and Fadak, and his property at Medina (devoted for charity). Abu Bakr refused to give her that property and said, "I will not leave anything Allah's Apostle used to do, because I am afraid that if I left something from the Prophet's tradition, then I would go astray." (Later on) Umar gave the Prophet's property (of Sadaqa) at Medina to 'Ali and 'Abbas, but he withheld the properties of Khaibar and Fadak in his custody and said, "These two properties are the Sadaqa which Allah's Apostle used to use for his expenditures and urgent needs. Now their management is to be entrusted to the ruler." (Az-Zuhrl said, "They have been managed in this way till today.")