עַל־הֶֽהָרִים֙ לֹ֣א אָכָ֔ל וְעֵינָיו֙ לֹ֣א נָשָׂ֔א אֶל־גִּלּוּלֵ֖י בֵּ֣ית יִשְׂרָאֵ֑ל אֶת־אֵ֥שֶׁת רֵעֵ֖הוּ לֹ֥א טִמֵּֽא׃
Wer nicht auf den Bergen gegessen hat und seine Augen nicht zu den Götzen des Hauses Israel erhoben hat, der hat seinen Nächsten nicht beschmutzt's Frau,
Mesilat Yesharim
For after a person has truly understood the obligation of Cleanliness and its necessity, having already attained Watchfulness and Zeal by engaging in the means they are acquired and distancing from their detriments, behold, he will no longer have any more obstructions preventing him from attaining Cleanliness except knowledge of the fine details of the Mitzvot in order to guard himself in all of them.
Mesilat Yesharim
Also, since one is prone to forgetfulness in these fine details, he will need diligent study in the books explaining these fine details to renew remembrance of them in his mind. Then certainly, he will be roused to fulfill them.