It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) that a man slaughtered a kid goat before the Prophet Muhammad (peace and blessings be upon him) performed the prayer. The Messenger of Allah (peace and blessings be upon him) said regarding this: After you, such an act will not suffice for anyone. And the Prophet (peace and blessings be upon him) forbade the people from offering sacrifice before performing the prayer.