Muhammad is only a messenger. Messengers have passed away before him. If he should die, or be killed, will you turn back on your heels? Those who turn on their heels do not harm the Lord in the least. God will reward the grateful. 144 No soul can ever die except by Allah's leave and at a term appointed. Whoso desireth the reward of the world, We bestow on him thereof; and whoso desireth the reward of the Hereafter, We bestow on him thereof. We shall reward the thankful. 145 And many a prophet hath fought with a number of godly men beside him. They fainted not for aught that befell them in the way of Allah, nor they weakened, nor they humbled themselves; and Allah loveth the steadfast. 146 Their only words were: 'Lord, forgive us our sins and that we exceeded in our affair, make us firm of foot and give us victory over the unbelievers' 147 So God rewarded them in this world, and a better reward awaits them in the next; for God loves those who do good. 148