Nonetheless, since the mitzva of ona is fulfilled by means of a person’s most physical elements, where lusts and urges loom large, one is prone to being overly attracted to them, to the point that one might forget the mitzva and think only about himself instead of about his wife. This is the impurity that lurks here, the flipside of this sacred mitzva. This is not meant to discourage a person from performing the mitzva, but to encourage him to refine his intentions when fulfilling it. The Sages thus encouraged one who wishes to become holier and more pious to sanctify himself through the mitzva of ona, that is, that he should be mindful of bringing his wife as much joy as possible. Ezra the Scribe, the same person who ordained that one must immerse after sexual relations, also made two enactments to increase the love between husband and wife: that they should eat garlic, an aphrodisiac, on Friday nights, thus increasing the passion of their sexual union, and that peddlers may sell perfume and jewelry everywhere, so that wives are enticing to their husbands (Bava Kama 82a-b; 2:5 above).