(4) باب مَا يُسْتَحَبُّ مِنَ الضَّحَايَا
Narrated Anas:
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.
Reference: Sunan Abi Dawud 2794
In-book reference: Book 16, Hadith 7
English translation: Book 15, Hadith 2788