مسند أحمد

It was narrated from 'Umar that he said to the Prophet (ﷺ) 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.”