An-Nafl is the name given to the additional amount the ruler gives to some soldiers above the share of spoils they are entitled to receive, based on obtaining an interest that he perceives. In this hadeeth, ‘Abdullah ibn ‘Umar (may Allah be pleased with him) reports that the Prophet ﷺ used to send a Sariyyah – which is a division of the army that does not exceed four hundred in number - and he ﷺ used to give to some of the soldiers of these military units gifts that were exclusive for them, besides the spoils that were distributed to the whole army in general. They would obtain their common share and the specifically rewarded additional share from the Messenger of Allah ﷺ.This was for wisdom and different reasons, such as if a man was particularly offensive against the enemy, or he ascended a fortress and opened it to the Muslims until they overtook it, or he attacked the leader of the enemy’s army and killed him, thus managing thereby to defeat the enemy.The Righteous Caliphs used to do that as well.It was said that he ﷺ used to give the Nafl from the Khums (one-fifth of the entire booty). This hadeeth shows that it is permissible to take into account the people of power and strength in war and to exclusively allocate them a gift in excess of others..