Narrated 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.
Hadith ReferenceSahih Bukhari / The Book of Partnership / Hadith: 2487
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة