Believers! Always be on your guard against encounters. Then (as circumstance demands) either advance in detachments or advance in a body. 71 Someone among you will surely lag behind, and if calamity should befall you, will say: "God was gracious to me that I was not among them." 72 But if good fortune comes to you from Allah, they would be sure to say - as if there had never been Ties of affection between you and them - "Oh! I wish I had been with them; a fine thing should I then have made of it!" 73 ۞ Let those who would exchange the life of this world for the Hereafter, fight for the cause of God; whoever fights for the cause of God, whether he is slain or is victorious, to him We shall give a great reward. 74 And how should you not fight for the cause of God, and for the helpless old men, women, and children who say, "Deliver us, Lord, from this city of wrongdoers, grant us a protector out of Your grace and grant us a supporter out of Your grace?" 75 Those who believe fight in the way of God; and those who do not, only fight for the powers of evil; so you should fight the allies of Satan. Surely the stratagem of Satan is ineffective. 76