‏الزكاة : Hadeeth No:2144 Abu Huraira reported Allaah's Messsenger (sallAllaahu alayhi wa sallam) as saying: No Sadaqa is due from a Muslim on his slave or horse....

‏الصلاة : Hadeeth No:1044 A hadith like this has been narrated by Abu Huraira with another chain of transmitters....