Ibrahim bin Musa al-Razi al-Fara' إبراهيم بن موسى الرازي الفراء · Sacrifice (Kitab Al-Dahaya)

The Prophet (ﷺ) sacrificed two horned rams which were white with black markings, slaughtered, and uttered: "Allah is Most Great." and mentioned Allah's name and placed his foot on their sides.

I asked al-Bara' ibn Azib: What should be avoided in sacrificial animals? He said: The Messenger of Allah (ﷺ) stood among us, and my fingers are smaller than his fingers, and my fingertips are smaller than his fingertips. He said (pointing with his fingers): Four (types of animals) should be avoided in sacrifice: A One-eyed animal which has obviously lost the sight of one eye, a sick animal which is obviously sick, a lame animal which obviously limps and an…