גַּ֤ם בְּלֹא־דַ֣עַת נֶ֣פֶשׁ לֹא־ט֑וֹב וְאָ֖ץ בְּרַגְלַ֣יִם חוֹטֵֽא׃
Also, that the soul be without knowledge is not good; And he that hasteth with his feet sinneth.
Rashi on Proverbs
It is also not good that a soul be without knowledge It is not good for a person to be without Torah.
Rashi on Proverbs
and he who hastens with his feet sins The sinner treads and tramples the sins with his heels and says, “This is of minor import; I will transgress it.” And our Sages explained: It is also...without knowledge, as referring to one who compels his wife to copulate with him against her will.
Rashi on Proverbs
and he who hastens with his feet sins This refers to one who performs the sex act and repeats it. Another explanation: One who walks on grass on the Sabbath.