Musnad Ahmad 5:60

Abu Mu'awiyah narrated to us, Al-A'mash narrated to us, from Sa'd ibn 'Ubaydah, from Abu 'Abd al-Rahman al-Sulami, from 'Ali, who said: The Messenger of Allah (peace and blessings of Allah be upon him) was sitting one day, and in his hand was a stick with which he was poking the ground. He said: "There is no soul among you but that its place in Paradise or Hell has already been known." They said: "O Messenger of Allah, so why should we act?" He said: "Act, for everyone is facilitated for that which he was created for." Then he recited: "As for he who gives and fears Allah, and believes in the best [reward], We will ease him toward ease. But as for he who withholds and considers himself free of need, and denies the best [reward], We will ease him toward difficulty." [Al-Layl: 5-10]