Ubaydullah bin 'Abdullah bin 'Utba عبيد الله بن عبد الله بن عتبة بن مسعود · The Book of Zakah

"The Messenger of Allah addressed us one day and said: 'By the One in Whose hand is my sould' three times then he lowered his head, and each of us lowered his head, weeping, and we did not know what he had sworn that oath about. Then he raised his head with joy on his face, and that was dearer to us than red camels. Then he said: 'There is no one who offers the five (daily) prayers, fasts Ramadan,…

"Sahl bin Abi Hathmah came to us when we were in the market and said: "The Messenger of Allah said: When you have estimated, take two-thirds (of the portion you have estimated as Zakah) and leave one-third, and if you do not take (two-thirds) or leave one-third. (One of the reporters) Shu 'bah doubted - leave one quarter."