The Messenger of Allah (peace be upon him and his family): Allah sent down from Paradise to the earth five rivers: Sayhun, which is a river in India; Jayhun, a river in Balkh; the Tigris and the Euphrates, two rivers in Iraq; and the Nile, a river in Egypt. Allah brought them down from a single spring from the lowest of the degrees of Paradise upon the two wings of Jibra'il (peace be upon him), and entrusted them to the mountains and caused them to flow upon the earth, and made them beneficial for the various stages of people's lives. And this is the word of Allah: وَ أَنْزَلْنا مِنَ السَّماءِ ماءً بِقَدَرٍ فَأَسْکَنَّاهُ فِی الْأَرْضِ [And We sent down water from the sky in a measure, then We lodged it in the earth]. When the time of the emergence of Ya'juj and Ma'juj arrives, Allah will send Jibra'il (peace be upon him) to raise up from the earth the Qur'an, all knowledge, the Black Stone from the walls of the House of Allah, the Maqam of Ibrahim (peace be upon him), the Ark of Musa (peace be upon him) and all that is in the Ark, and these five rivers, and take them up to the heavens. And this is the word of Allah the Mighty and Majestic: 'and indeed We are fully able to take it away.' And when these things are raised up from the earth, the people of the earth will lose the good and blessing of this world and the Hereafter.