There are ten other kinds of fruit [whose roots are] in the World of Making, corresponding to the ten sefirot[of that world]. Consequently, we eat what is within and discard what is without. For the fruit’s shell is a barrier between it and the World of Delights,38The World of Making is bordered by the realm of evil forces that is characterized by lust or pleasures entirely separated from holiness. so that it will not take on the impurity [of the evil forces].39The spiritual battle that must be waged between good and evil, or holiness and impurity, is confronted directly in the World of Making.
Consequently, the fruit that correspond to that world require a hard outer shell. The fruit that symbolize the World of Formation have only a hard inner kernel, because that world is not directly assailable by the forces of evil, but may only be penetrated by evil/impurity. This is the esoteric meaning of the evil urge and ‘the kelippah‘ cleave to the nefesh.40The human soul potentially contains a series of grade or parts that hierarchically correspond to the series of worlds.
The lowest grade, nefesh, like the World of Making, is directly assailable by the forces of evil. The following correspond to sefirot of the World of Making: pomegranates, walnuts, almonds, pistachio, chestnuts, hazelnuts, acorns, coconut, pine nuts, peanuts.