Sahih Bukhari
Sahih Bukhari Volume 003, Book 044, Hadith Number 667.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 44. Partnership
Narated By Anas : That Abu Bakr As-Siddiq wrote to him the law of Zakat which was made obligatory by Allah's Apostle. He wrote: 'Partners possessing joint property (sheep) have to pay its Zakat equally.