יהושע כ״ב:ז׳-ח׳

וגם כי שלחם יהושע. לחצי שבט המנשה, כאשר שלח את בני ראובן וגד:

Furthermore, when Yehoshua sent them off. He sent off the half-tribe of Menashe in the same manner as he sent off the Bnei Reuvein and the Bnei Gad.

עם אחיכם. בני ראובן ובני גד ויש פותרין: עם אחיכם, שנשארו לשמור את הערים עם הנשים והטף, ולא עברו את הירדן עם החלוצים, גם הם נטלו חלק בבזה:

[Divide the spoils] with your brothers— Referring to Bnei Gad and Bnei Reuvein. There are some who interpret “brothers” in referrence to those who remained behind to guard the cities and the women and children. [Even though] they did not cross the Jordan— with the armed division, nevertheless they received a share of the spoils.¹This practice was instituted by Avrohom. See Bereishis 14:24. Rashi comments there that Dovid learned from Avrohom’s action and established this as a tradition.