Rashi on Genesis 3:7/רש"י על בראשית ג׳:ז׳

1‘ותפקחנה וגו [AND THE EYES OF BOTH OF THEM] WERE UNCLOSED — Scripture speaks here with reference to intelligence (the mind’s eye) and not with reference to actual seeing; the end of the verse proves this for it states,

2וידעו כי ערומים הם AND THEY KNEW THAT THEY WERE NAKED — Even a blind person knows when he is naked! What then does “and they knew that they were naked” signify? One charge had been entrusted to them and they now knew they had stripped themselves of it (Genesis Rabbah 19:6).

3עלה תאנה FIG LEAVES — This was the tree of which they had eaten; by the very thing through which their ruin had been caused was some improvement effected in their condition (Sanhedrin 70b). The other trees however prevented them from taking of their leaves. And why is not the name of the tree clearly mentioned? Because the Holy One, blessed be He, never wishes to grieve anything He has created: hence its name is not mentioned in order that it might not be put to shame by people saying, “This is the tree through which the world suffered” (Midrash R. Tanchuma 1:4:14).