Narrated It was narrated from Ibn as-Simt that he came to some land called Doomeen, eighteen miles from Homs, and prayed two rak'ahs. I said to him. Are you praying two rak'ahs? He said:
I saw 'Umar bin al-Khattab in Dhul-Hulaifah praying two rak'ahs and I asked him (about that). He said: I am only doing what I saw the Messenger of Allah ﷺ do.
Narrated ‘Abdur-Rahman bin ‘Awf narrated that 'Umar bin al Khattab رضي الله عنه addressed the people and he heard him say:
Some people say: what is this stoning? ín the Book of Allah it mentions flogging.But the Messenger of Allah ﷺ stoned after him. Were it not that some people would say that 'Umar added something to the Book of Allah that is not part of it, I would have written it the way it was revealed.
One of the Companions of the Messenger of Allah ﷺ entered the mosque on a Friday, when 'Umar bin al Khattab رضي الله عنه was addressing the people. 'Umar said: What time is this? He said: 'O Ameer al-Mu'mineen, I have just come from the marketplace. I heard the call and I did not do anything more than wudoo', 'Umar رضي الله عنه said: Wudoo’ too! You know that the Messenger of Allah ﷺ used to enjoin ghusl!
Narrated It was narrated from 'Umar that he said to the Prophet ﷺ:
What do you think about what we are striving for is it something already decided or something that is evolving now or something new? He said: “It is something already decided,` `Umar said: Then why don't we rely on what is already decided? He said: `Strive, O son of al-Khattab, for everyone will be helped; whoever is one of the people of bliss will strive for that bliss and whoever is one of the people of doom will strive for that doom.”