Sav’idina Fadalah ibn Ubayd (RA) reported from Allahs Messenger that he said, ‘Every dying person has his deeds sealed except one who dies guarding the frontiers in Allah s path. His deed is grown for him till the Day of Resurrection, and he is safe from the trial of the gra’e.” He also said that he heard Allah’s Messenger say, A muahid (warrior) is one who fights (or endeavours) against his own self.
[Abu Dawud 2500]