'Attend to the people who are about to die and dictate to them [the phrase]: La ilaha illallah (There is no god but Allah), and give them glad tidings of Heaven, for even the most forbearant of men and women become perplexed at that instant, and Satan comes as close as he can get to the children of Adam in that state. By He who owns my soul! Seeing the angel of Death is more severe than being hit one thousand times by a sword. By He who owns my soul! The soul of a servant will not exit from the world until every vein in him feels pain.?