When we were with God's messenger at Hunain, he said of one of those who were with him who claimed to be a Muslim, "This will be one of the inhabitants of hell." When the fighting took place, the man fought most valiantly and received many wounds, so a man came and said, "Messenger of God, tell me about the man of whom you were telling that he would be one of the inhabitants of hell. He has fought valiantly in God's path and received many wounds." He replied, "He will indeed be one of the inhabitants of hell." Some people almost doubted, but while things were so the man felt the pain of his wounds, and putting his band into his quiver drew out an arrow and stabbed himself with it. Some Muslims then hastened to God's messenger and said, "Messenger of God, God has verified what you told. So and so has stabbed and killed himself." God's messenger then said, "God is most great. I testify that I am God's servant and messenger. Get up, Bilal, and make an announcement that only a believer will enter paradise, but that God will support this religion with a wicked man[*]." *While hypocrites and others whose character is worthless may fight on the side of the Muslims, only those who have faith will enter paradise. The idea is that taking part in Jihad does not of itself guarantee entrance into paradise. Bukhari transmitted it.