Muslim narrated in his Saheeh that Jaabir said: Suraaqah ibn Maalik ibn Ju’sham came and said: “O Messenger of Allah, explain our religion to us as if we had only just been created. What should we strive for today? Is it for something concerning which the pens  have dried and the decree has been issued, or is it concerning which the pens have dried and the decree has been issued, or is it concerning something that is yet to be decided?” He صلى الله عليه وسلم said: “No, it is for something concerning which the pens have dried and the decree has been issued.” He said, “Then why should we strive?” He صلى الله عليه وسلم said: “Strive, for each person will be facilitated to do his deeds.”

Sahih Muslim