(3) باب اسْتِحْبَابِ الضَّحِيَّةِ وَذَبْحِهَا مُبَاشَرَةً بِلاَ تَوْكِيلٍ وَالتَّسْمِيَةِ وَالتَّكْبِيرِ
'A'isha reported that Allah's Messenger (ﷺ) commanded that a ram with black legs, black belly and black (circles) round the eyes should be brought to him, so that he should sacrifice it. He said to 'A'isha:
Give me the large knife, and then said: Sharpen it on a stone. She did that. He then took it (the knife) and then the ram; he placed it on the ground and then sacrificed it, saying: Bismillah, Allah-humma Taqabbal min Muhammadin wa Al-i-Muhammadin, wa min Ummati Muhammadin (In the name of Allah," O Allah, accept [this sacrifice] on behalf of Muhammad and the family of Muhammad and the Umma of Muhammad" ).
Reference: Sahih Muslim 1967
In-book reference: Book 35, Hadith 28
USC-MSA web (English) reference(deprecated numbering scheme): Book 22, Hadith 4845