Before accepting Islam, Umar was one of the most rabid enemies of Muhammad, the Messenger of God.
Nawafil prayers are not allowed with Jama'at except salatul-istisqa' (the salat for praying to Allah to send rain)..
Umar ordered Qunfuz to bring a whip and strike Janabe Zahra (s.a.) with it.
And we summarize the lineage of Omar Bin Al Khattab as follows:
Umar who had not accepted Islam by that time would beat her mercilessly until he was tired. He would then say