He directs the command from the heaven to the earth for the duration of this world then it ascends then the command and the direction thereof returns to Him in a day whose measure is a thousand years by your reckoning in this world. In sūrat sa’ala An asker asked the measure is said to be ‘fifty thousand years’ Q. 704 — and this day is the Day of Resurrection reckoned so because of the severity of its terrors for the disbeliever. As for the believer however for him it will be easier than performing any one of his obligatory prayers in this world — as is stated in hadīth.