Sayyiduna Ubada bin Samit (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "Paradise has one hundred levels, and between every two levels is a distance of one hundred years." In his narration, Affan said: "As much as the distance between the sky and the earth." The highest place in the level is Firdaus; from it four rivers flow, and above it is the Throne. Whenever you ask Allah, then ask for Firdaus.