The Book of Zakat (Kitab Al-Zakat)
Muslim :: Book 5 : Hadith 2183
Jabir reported: A person from the Banu 'Udhra set a slave free after his death. This news reached the Messenger of Allah (may peace be upon hhn). Upon this he said: Have you any property besides it? He said: No. Upon this he said: Who would buy (this slave) from me? Nulaim b. Abdullah bought it for eight hundred dirhams and (this amount was) brought to the Messenger of Allah (may peace be upon him) who returned it to him (the owner), and then said: Start with your own self and spend it on yourself, and if anything is left, it should be spent on your family, and if anything is left (after meeting the needs of the family) it should be spent on relatives, and if anything is left from the family, it should be spent like this, like this. And he was saying: In front of you, on your right and on your left.