भवति तावानस्य लोको भवति य एवं विद्वानधोपहासं चरत्यासां स्त्रीणां सुकृतं वृङ्क्तेऽथ य इदमविद्वानधोपहासं चरत्यास्य स्त्रियः सुकृतं वृञ्जते ॥ ३ ॥
In plain words
...and that world becomes his — vast as the sacrifice itself. A man who understands this, and comes to a woman this way, gathers her merit into himself. But a man who does the very same thing without understanding — it is his own merit that slips away to her instead.
Close to the Sanskrit
...becomes; so great, verily, becomes his world. He who, thus knowing, engages in the sport from below draws to himself the merit of these women; but he who, not knowing this, engages in the sport from below — his women draw away his merit.