Answer:
(Fatwa: 973/825=D/1430)
If the imam is well aware of sajdah sahv and he performs the same when needed, so you should not fall in doubt, the salah performed behind him is valid, you should not leave the jama?ah. But, if you are doubtful that the imam performs sajdah sahv unnecessarily, you should confirm it with him.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
