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 It is not given to any soul to die, save by the leave of God, at an appointed time. Whoso desires the reward of this world, We will give him of this; and whoso desires the reward of the other world, We will give him of that; and We will recompense the thankful. 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 All they said was, "Our Lord, forgive us our sins and our excesses. Make our feet firm, and help us against those who deny the truth," 147 And Allah gave them a reward in this world, and the excellent reward of the Hereafter. For Allah Loveth those who do good. 148