SB 3.28.32

...So in order to protect the devotees and the sages who are after self-realization, the charming brow of the Supreme Personality of Godhead protects the sages and the devotees from being charmed by the material lust or sex attraction. There is a great acarya called Yamunacarya, he said that so long he has begun to see the charming pastimes of the Lord, since then the charming of sex life has become abominable for him, so that as soon as he thinks of sex enjoyment he spits over the thoughts and his face becomes turned. Otherwise, in other words, that if anyone wants to be aloof from the sex attraction, one has to see the charming smile and charming brow-eyebrow of the Supreme Personality of Godhead.