Sayyiduna Abu Bakr al-Siddiq (may Allah be pleased with him) said: I said: O Messenger of Allah, are we acting upon a matter that has already been decided, or upon a matter that is new? He (peace and blessings be upon him) said: "Rather, upon a matter that has already been decided." I said: Then what is the purpose of deeds, O Messenger of Allah? He (peace and blessings be upon him) said: "Each person is made easy for that for which he was created."
Hadith Referenceالمعجم الكبير للطبراني / العشرة / 47