In that case when should we pray 2 Rakah Sunnah - immediately after Fardh  Jamat is over or after the sunrise?

A: Haamidaw wa Musalliyaa

If it is possible to perform the Sunnah prayer and still join the congregation before the Imaam makes the Salaam, one should perform the Sunnah prayer and then join the congregation. However, if one would not be able to join the congregation if he engages in the Sunnah prayer, then he should join the congregation and perform the Sunnah prayer 10 minutes after sunrise.

And Allah Ta'ala Knows Best

Shafiq Jakhura (Mufti)
Fatwa Dept.