Praying the obligatory prayer in congregation, then another congregation is established and one joins them with the intention of a voluntary prayer

Question:
May Allah reward you with good. The caller from Riyadh says: In the prayer halls of some hospitals and the like, the prayer is established four times or more. If I have prayed with the first or second congregation, is it permissible for me to pray with those who come after them with the intention of a voluntary prayer? Because that is more enlivening for me than performing the voluntary prayer alone. Then, is it permissible for me to pray a third time with the intention of a voluntary prayer as well, so that I would have completed four rak'ahs before the midday prayer and prayed four after it?

Answer:
There is nothing wrong with that. The default is that the prayer of the one performing a voluntary prayer behind a congregation that has already prayed is valid. So if you intend that your second prayer is a voluntary prayer, and that it is the regular voluntary prayer (rawatib) of four rak'ahs after the midday prayer, then there is no blame on you for that. Yes.