1232. Narrated Anas bin Maalik (radhi Allaahu anhu) : The Prophet (Sallallaahu Alaihi Wasallam) said,

Nobody who enters Paradise likes to go back to the world even if he got everything on the earth, except a Mujaahid who wishes to return to the world so that he may be martyred ten times because of the honour and dignity he receives (from Allaah).”

[Saheeh Al-Bukhaari, Hadeeth No. 72, Vol. 4]

Source : The Book Of Al-Imaara – Chapter 29 – The superiority of  martyrdom in Allaah’s Cause. Al-Lulu al-Marjan,Compiled by : Fuwad Abdul-Baqi,Translated by : Dr. Muhammad Muhsin Khan

Obligation of Jihad – Imam Al-Nawawi’s Riyad-us-Saliheen