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

Bukhari :: Book 4 :: Volume 53 :: Hadith 342

Narrated 'Ali bin Al-Husain:

That when they reached Medina after returning from Yazid bin Mu'awaiya after the martyrdom of Husain bin 'Ali (may Allah bestow His Mercy upon him), Al-Miswar bin Makhrama met him and said to him, "Do you have any need you may order me to satisfy?" 'Ali said, "No." Al-Miswar said, Will you give me the sword of Allah's Apostle for I am afraid that people may take it from you by force? By Allah, if you give it to me, they will never be able to take it till I die." When Ali bin Abu Talib demanded the hand of the daughter of Abi Jahal to be his wife besides Fatima, I heard Allah's Apostle on his pulpit delivering a sermon in this connection before the people, and I had then attained my age of puberty. Allah's Apostle said, "Fatima is from me, and I am afraid she will be subjected to trials in her religion (because of jealousy)." The Prophet then mentioned one of his son-in-law who was from the tribe of 'Abu Shams, and he praised him as a good son-in-law, saying, "Whatever he said was the truth, and he promised me and fulfilled his promise. I do not make a legal thing illegal, nor do I make an illegal thing legal, but by Allah, the daughter of Allah's Apostle and the daughter of the enemy of Allah, (i.e. Abu Jahl) can never get together (as the wives of one man) (See Hadith No. 76, Vo. 5).