Fathwa - Should I Pray 20 Rak'ahs With The Imaam Or 8?

Question:
If I pray in the masjid and the Imaam prays twenty rak'ahs, should I
complete twenty along with him or should I prayeight rak'ahs along
with him and then pray witr alone and leave?
Answer:
I advise that you pray 20 rak'ahs and you pray the witr alone.
Following the Sunnah is more deserving, for indeed the Prophet,
salallaahu 'alaihi wasallam, said:Pray like you have seen me pray.