Sahih al-Bukhari Book 73, Hadith 13
Abu Burda slaughtered (the sacrifice) before the (`Id) prayer whereupon the Prophet (ﷺ) said to him,
"Slaughter another sacrifice instead of that." Abu Burda said, "I have nothing except a Jadha'a."
(Shu`ba said: Perhaps Abu Burda also said that Jadha'a was better than an old sheep in his opinion.)
The Prophet (ﷺ) said, "(Never mind), slaughter it to make up for the other one, but it will not be sufficient
for anyone else after you."
An uncle of mine called Abu Burda, slaughtered his sacrifice before the `Id prayer. So Allah's Messenger (ﷺ) said to him, "Your (slaughtered) sheep was just mutton (not a sacrifice)." Abu Burda said, "O Allah's Apostle! I have got a domestic kid goat." The Prophet (ﷺ) said, "Slaughter it (as a sacrifice) but it will not be permissible for anybody other than you" The Prophet (ﷺ) added, "Whoever slaughtered his sacrifice before the (`Id) prayer, he only slaughtered for himself, and whoever slaughtered it after the prayer, he offered his sacrifice properly and followed the tradition of the Muslims."
The Prophet (ﷺ) slaughtered two rams, black and white in color (as sacrifices), and I saw him putting his foot on their sides and mentioning Allah's Name and Takbir (Allahu Akbar). Then he slaughtered them with his own hands.