Sahih Muslim
The Book on Government (Kitab Al-Imara)
Book Number: 020 / Hadith Number: 4635
It has been narrated on the authority of Anas b. Malik (through a different chain of transmitters) that the Messenger of Allah (may peace be upon him) said: Nobody who enters Paradise will (ever like to) return to this world even if he were offered everything on the surface of the earth (as an inducement) except the martyr who will desire to return to this world and be killed ten times for the sake of the great honour that has been bestowed upon him.