פירוש על ברכות 69:16

Cf. Deut. viii. 8.

From the common use of "land" in Deut. viii. 8 and ibid: xxvi. 2 it is deduced that the law of first-fruit applies only to the "seven species" (see Menahot 84 b). Therefore the necessity for a benediction with things outside this category has still to be proved.