‏الأضاحي : Hadeeth No:4841 Anas reported that Allaah's Messenger (sallAllaahu alayhi wa sallam) sacrificed with his own hands two horned rams which were white with black markings reciting the name of Allaah and glorifying Him (saying Allaah-o-Akbar). He placed his foot on their sides (while sacrificing)....

‏الزكاة : Hadeeth No:2264 This hadith has been narrated on the authority of the brother of Zuhri with the same chain of transmitters, but no mention has been made of the word" muz'a" (piece)....