ANSWER:

Pray one witr with the imam. After that, whatever you offer, would be in pairs.

I pray 20 rakat qiyamul lail in a hanfi masjid just after isha prayer with congregation.i also pray 3 rakat of witr in congregation with them.But i wake up in last part of night to pray tahjud.Do i need to pray witr after tahjud or praying with congregation after isha is fine.?

Taraweeh, Tahajjud and Qiyam-ul-Layl | May 14, 2019 2:17 am
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shaikh my question is regarding praying tahajjud prayer even after completing the tarawi with the imam, I heard some saying it is not permissible to add after tarawi and some are saying it is, pls I need more clarification.
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We pray tawareeh together, then we pray witr in congregation, and after witr, the imam does dua and we say ameen togther. Is the last part about dua an innovation?