Praying with the late 'Isha' congregation or with the imam of the tarawih

Question:
He says: Honorable Shaykh, if the imam is praying the tarawih, and there is a congregation praying the 'Isha', and I entered the mosque without having prayed the 'Isha', what is better: should I pray with the late congregation, or should I join the imam who is praying the tarawih?

Answer:
No, pray with the late congregation. The ruling for the late congregation is to pray with them; it is better than joining the imam, then standing up after the imam to complete your prayer. Pray with the late congregation, yes.