‏فضائل الصحابة‏ : Hadeeth No:5946 'Urwa reported: 'Aisha said to me: Your fathers (Zubair and Abu Bakr) were amongst those about whom (it has been revealed):" Those who responded to the call of Allaah and His Messenger after the misfortune had fallen upon them."...

‏الزكاة : Hadeeth No:2145 Abu Huraira reported Allaah's Messenger (sallAllaahu alayhi wa sallam) as saying: No Sadaqa is due from a Muslim on his slave or horse....