Abu Huraira reported God’s messenger as saying, “No sadaqa is due from a Muslim on his slave or his horse.” In a version he said, “There is no sadaqa on his slave except that given at the breaking of the fast.” (Bukhari and Muslim.)
Hadith Referenceمشكوة المصابيح / كتاب الزكاة / 1795
Hadith Gradingالألبانی:مُتَّفَقٌ عَلَيْهِ | زبیر علی زئی:متفق عليه
Hadith Takhrij´تحقيق و تخريج: محدث العصر حافظ زبير على زئي رحمه الله` «متفق عليه، رواه البخاري (1464، 1263) و مسلم (982/8)»