O you who believe! be careful of (your duty to) Allah and be with the true ones. 119 It is not for the townsfolk of Al-Madinah and for those around them of the wandering Arabs to stay behind the messenger of Allah and prefer their lives to his life. That is because neither thirst nor toil nor hunger afflicteth them in the way of Allah, nor step they any step that angereth the disbelievers, nor gain they from the enemy a gain, but a good deed is recorded for them therefor. Lo! Allah loseth not the wages of the good. 120 There is not a sum, large or small, that they spend, not a piece of land that they traverse (in the service of God) which is not put down in their favour, so that God could reward them for what they had done. 121 ۞ It is not possible for all believers to go out (to fight). So a part of each section (of the population) should go (to fight) in order that the others may acquire understanding of law and divinity, and warn their companions on return so that they may take heed for themselves. 122