民數記 36:4 註釋：Rashi, Ibn Ezra, Sforno & Rabbeinu Bahya

ואם יהיה היבל may mean AND IF THERE WILL BE THE JUBILEE — From this R. Judah said: The observance of the Jubilee will cease at some time or other (Sifra, Vayikra Dibbura d'Nedavah, Section 13 1 on Leviticus 2:14).

And even when the Yoveil occurs. And even if there will be a Yoveil, we will not hope to return the inheritance to us, it will always just be an addition to the inheritance of the tribe.

ואם יהיה היובל...יגרע נחלתן, even in the event that we will not now conquer the whole land, as predicted in Exodus 23,30 that the land would be conquered in stages, progressively, so that each tribe would have to conquer the area it laid claim to, a person who had sold his share or potential share could not claim exemption form the war of conquest seeing that the land he had sold would be restored to him in the Jubilee year. In any event it would remain part of his tribe’s ancestral heritage. However, the share given to the daughters of Tzelofchod which would not be restored to their tribe in the Jubilee year, would furnish an excuse to members of their tribe not to bother to fight for that piece of land, and they would allow the present owners to remain there. At any rate, the argument of the family of Machir of Menashe was that the most recent legislation could result in the whole principle of sharing out the land by lottery being partially aborted.

ואם יהיה היבל may mean, too: AND WHEN THERE WILL BE THE JUBILEE [THEN WILL THEIR INHERITANCE BE ADDED TO THE INHERITANCE OF THE TRIBE TO WHICH THEY SHALL BELONG] — meaning: This is no sale of land so that it returns to the original owner at the Jubilee, for a heritage never returns. Therefore even when the Jubilee will be, the inheritance will not return to its tribe, and it will follow that it will be added על נחלת המטה אשר תהיינה להם TO THE INHERITANCE OF THE TRIBE TO WHICH THEY SHALL BELONG.