Salman al-Fairisi told that he heard God’s Messenger say, “Being stationed for a day and a night on the frontier in God’s path is better than fasting a month and spending its nights in prayer. If one dies he will be rewarded for the deeds he was doing, he will be given his provision, and will be safe from him who tests him.”*
* Al-fattan. There is some doubt as to the reference here. It may be the devil, this name being used because he tempts people to sin; or it may mean the one who examines men in the grave. Munkar and Nakir are called fattana'l-qabr, the two who test men in the grave.
He reported God’s Messenger as saying, “By Him in whose hand my soul is, were it not that men among the believers are not satisfied with remaining behind me when I cannot get mounts for them, I would not stay behind when an expedition goes out in God’s path. By Him in whose hand my soul is, I wish I could be killed in God’s path and brought to life, then be killed and brought to life, then be killed and brought to life, then be killed.”