"And Hashem did not give to him a nachalah (inheritance) in it nor AD MIDRACH KAF REGEL ("even enough to put your foot on" DEVARIM 2:5); and yet, even when he had no ben, the havtachah (promise) of Hashem to him was ES HAARETZ HAZOT E'TEN ("This land I will give") to him and to his zera (seed) after him. [DEVARIM 2:5; BERESHIS 12:7; 13:15; 17:8; 26:3; 48:4]