The Prophet (may Allah's peace and blessings be upon him) sacrificed two black and white horned rams, which he slaughtered with his hand, as he mentioned Allah's name and said: "Allāhu Akbar" (Allah is the Most Great), and put his foot on their necks The Messenger (may Allah's peace and blessings be upon him) prayed on the Day of An-Nahr, then delivered a sermon, then slaughtered (an animal) and said: Whoever slaughtered before praying should slaughter another animal instead, and whoever has not yet slaughtered should slaughter while mentioning Allah's name Whoever can afford it but does not offer a sacrifice, let him not come near our prayer place The Prophet (may Allah's peace and blessings be upon him) delivered a sermon after having offered the prayer on Eid al-Ad'ha. He said: Whoever prayed our prayer and slaughtered our sacrifice has properly observed the ritual. And whoever slaughtered (his sacrifice) before the (Eid) prayer has not observed the ritual Whoever has a sacrifice to slaughter, once the crescent of Dhul-Hijjah is declared, he should not take anything from his hair or his nails until he sacrifices