What does one do if he arrives while the imam is praying the night prayer and he has not prayed the sunset prayer?

Question:
The second issue concerns the one who missed the sunset prayer and joined the imam in the night prayer: does he pray the sunset prayer or the night prayer? And if he prays the sunset prayer, how is the manner of praying with the imam, since the sunset prayer is three units and the imam is praying four?

Answer:
My brother, the order must be maintained: you pray the sunset prayer first, then you pray the night prayer. If you join the imam with the intention of the sunset prayer, then when the imam stands for the fourth unit, you do not stand with him; rather, you sit and then you recite the tashahhud. If you wish, you may conclude the prayer for yourself, and if you wish, you may wait until the imam concludes the prayer and conclude it with him. Yes.