וְאִם־אֵ֥ין ל֖וֹ אַחִ֑ים וּנְתַתֶּ֥ם אֶת־נַחֲלָת֖וֹ לַאֲחֵ֥י אָבִֽיו׃
他若沒有弟兄，你們就要把他的產業給他父親的弟兄。
Bartenura
והאחין מן האב – as it is written (Numbers 27:10): “in his own clan, and he shall inherit it.” And the family/clan of the father is called a family, as it is written (Numbers 1:2): “by the clans of its ancestral houses.”