O you who believe! be careful of (your duty to) Allah and be with the true ones. 119 The people of Madinah and the Arabs who dwell around them have no cause to stay behind the Messenger of Allah, or to prefer their lives to his. They are neither stricken by thirst, nor by tiredness, nor yet by hunger in the Way of Allah, nor do they take steps that anger the unbelievers, nor gain any gain from an enemy, but that it is counted as a righteous deed. Allah does not waste the wage of the gooddoers. 120 Also, they would not have spent anything, great or small, for the cause of God or travel through a valley without God decreeing a reward for them far better than whatever 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