The ruling on bowing or prostrating before the imam

Question:
He says: I see some of the worshippers, may Allah guide them, prostrating before the imam or bowing before the imam. In such a case, is the prayer invalid? And does he have to repeat it?

Answer:
Yes, if he did not do what preceded him after the imam, he goes back and does it after the imam. If he bowed before the imam or prostrated before the imam, then if he made up for it and did it after the imam, his prayer is valid, and what he did is considered that he should repent to Allah from it. But if he bowed before the imam or prostrated before the imam and did not retract from that, then his prayer is invalid. The saying of the Prophet (peace and blessings be upon him) . Yes.