The Book of Faith (Kitab Al-Iman)

Muslim :: Book 1 : Hadith 203

It is narrated on the authority of Thabit b. Dahhak that the Apostle of Allah (may peace be upon him) observed: He who took deliberately a false oath on a religion other than Islam would become that which he had professed. And he who killed himself with anything Allah would torment him with that in the Fire of Hell.

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star