In case I missed Isha salah jamat can I join taravih salah jamat and make intention of Isha fardh continue 4 rakah or have to pray separately.
بسم الله الرحمن الرحيم
(Fatwa: 1291/1087/L=9/1439)
It is not valid to make intention of Isha salah in taravih. If your Isha salah is missed then offer fardh salah and then join taravih salah.
Allah knows Best!
Darul Ifta,
Darul Uloom Deoband