What is the ruling on purchasing the entitlement to a plot of land, the square of which has been designated by the governmental authority, with only the drawing of lots remaining, given that the seller has assigned the entitlement through a lawyer?

The usufructuary's right to the land or ownership thereof in governmental transactions is not established until after allocation by lottery. Therefore, the land cannot be sold until ownership is settled. Furthermore, a mere waiver of entitlement is not permissible unless it pertains to an established and settled right, and provided that the governmental authority allows such a waiver.