Muhammad is only a messenger; and many a messenger has gone before him. So what if he dies or is killed! Will you turn back and go away in haste? But he who turns back and goes away in haste will do no harm to God. But God will reward those who give thanks (and are grateful). 144 Nor can a soul die except by Allah's leave, the term being fixed as by writing. If any do desire a reward in this life, We shall give it to him; and if any do desire a reward in the Hereafter, We shall give it to him. And swiftly shall We reward those that (serve us with) gratitude. 145 And how many a prophet has had to fight [in God's cause,] followed by many God-devoted men: and they did not become faint of heart for all that they had to suffer in God's cause, and neither did they weaken, nor did they abase themselves [before the enemy,] since God loves those who are patient in adversity; 146 and all that they said was this: "O our Sustainer! Forgive us our sins and the lack of moderation in our doings! And make firm our steps, and succour us against people who deny the truth!" 147 whereupon God granted them the rewards of this world, as well as the goodliest rewards of the life to come: for God loves the doers of good. 148