Sayyiduna Abu Dharr (may Allah be pleased with him) narrated that I entered the mosque and the Messenger of Allah (peace and blessings be upon him) was sitting. When the sun set, he said, "O Abu Dharr, do you know where it goes?" I replied, "Allah and His Messenger know best." He said, "It goes and seeks permission to prostrate, and it is granted permission. And it is as if it is said to it, 'Return to where you came from.' Thus, it rises from the west." Then he recited this verse: "That is its appointed course."