O ye who believe! Be careful of your duty to Allah, and be with the truthful. 119 It does not behove the people of the [Prophet's] City and the bedouin [who live] around them to hold back from following God's Apostle, or to care for their own selves more than for him - for, whenever they suffer from thirst or weariness or hunger in God's cause, and whenever they take any step which confounds those who deny the truth, and whenever there comes to them from the enemy whatever may be destined for them - [whenever anything thereof comes to pass,] a good deed is recorded in their favour. Verily, God does not fail to requite the doers of 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 ۞ With all this, it is not desirable that all of the believers take the field [in time of war]. From within every group in their midst, some shall refrain from going forth to war, and shall devote themselves [instead] to acquiring a deeper knowledge of the Faith and [thus be able to] teach their home-coming brethren, so that these [too] might guard themselves against evil. 122