If one joins the imam while he is reciting, does he recite the opening supplication or remain silent?

Question:
If the ma'mum joins the prayer while the imam is reciting, does he say the takbir of entering prayer and recite the opening supplication, or does he remain silent to listen to the imam's recitation?

Answer:
They say he recites it, even in what they say is the opening supplication and seeking refuge, even when his imam is reciting aloud, because the imam does not take on the opening supplication and seeking refuge for him; he does not take them on. They are not among the matters the imam takes on for the ma'mum. However, he should not disturb the prayer; he should do it gently and quietly, and his voice should not be heard. Yes.