When Hazrat Mahdi (as) passes away, we will say, “Oh Lord, make him attain Paradise.” But in that period Prophet Jesus (as) will be on duty. Because the Prophet Jesus (as) will be on duty, the demise of Hazrat Mahdi (as) will not shake Muslims. But following the demise of the Prophet Jesus (as) Muslims will become lost and a constant corruption will start. - Harun Yahya