Sahih Bukhari
Obligatory Charity Tax (Zakat)
Volume: 002 / Book Number: 024 / Hadith Number: 572
Narrated Anas:
Some meat was presented to the Prophet (p.b.u.h) and it had been given to Barira (the freed slave-girl of Aisha) in charity. He said, "This meat is a thing of charity for Barira but it is a gift for us."