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Allah's Messenger (ﷺ) used to give extra share to some of the members of the Sariya he used to send, in addition to the shares they shared with the army in general.

It has been narrated on the authority of Abdullah b. 'Umar that the Messenger of Allah (ﷺ) used to give (from the spoils of war) to small troops seat on expeditions something more than the due share of each fighter in a large force. And Khu

The Messenger of Allah (ﷺ) used to give to some of the detachments he sent out (something extra) for themselves in particular apart from the division made to the whole army. The fifth is necessary in all that.