Silsilat al-Ahadith al-Sahihah

It is narrated from Sayyiduna Abu Darda (may Allah be pleased with him) that a companion said: O Messenger of Allah! The deeds we are doing, has their (decision already been made and) completed, or are we doing them anew? The Prophet (peace and blessings be upon him) said: "The matter (has been decided and) completed." He said: O Messenger of Allah! Then what is the use of action? The Prophet (peace and blessings be upon him) said: "A person will be facilitated for that for which he was created."