Amir narrates from Sayyiduna al-Bara' bin Azib (may Allah be pleased with him) that (he said): My maternal uncle, Sayyiduna Abu Burdah bin Niyar (may Allah be pleased with him), sacrificed before the prayer. He (peace and blessings be upon him) said: "This is a goat for meat." He said: O Messenger of Allah! I have a jadha'ah of goats. He (peace and blessings be upon him) said: "Sacrifice this one, but it is not valid for anyone else."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الضحايا / 19059