O Prophet, urge the faithful to fight. If there are twenty among you with determination they will vanquish two hundred; and if there are a hundred then they will vanquish a thousand unbelievers, for they are people devoid of understanding. 65 Now, Allah has lightened [the hardship] for you, and He knows that among you is weakness. So if there are from you one hundred [who are] steadfast, they will overcome two hundred. And if there are among you a thousand, they will overcome two thousand by permission of Allah. And Allah is with the steadfast. 66 It is not right for a Prophet to keep captives unless he has battled strenuously in the land. You desire the gain of this world, while God desires for you the Hereafter -- God is mighty and wise. 67 Had there not been a previous writing from Allah, you would have been afflicted by a mighty punishment. 68 Now enjoy what ye have won, as lawful and good, and keep your duty to Allah. Lo! Allah is Forgiving, Merciful. 69