If I enter the mosque and do not catch up with the congregation, and I find a boy, do I pray with him in congregation, or what do I do?

Question:
What do I do if I enter the mosque and do not catch up with the congregation, and I find a small boy who has not prayed? Do I establish the prayer and pray with him in congregation, or what is obligatory for me in this case? May Allah reward you with good.

Answer:
Yes, if this boy has reached the age of discernment, then you pray with him in congregation, and the congregation is valid with you both according to the correct opinion, if Allah wills. This is because Ibn Abbas (may Allah be pleased with him) was a small child, and he stood with the Prophet (peace and blessings be upon him), and he stood to his left, so the Prophet (peace and blessings be upon him) moved him to his right. This indicates the validity of the boy’s row in prayer. Yes. And... May Allah reward you with good, and may Allah reward you.