4. This, verily, indeed, it was that Uddâlaka Âruṅi knew when he said:-- This, verily, indeed, it was that Nâka Maudgalya knew when he said:-- This, verily, indeed, it was that Kumârahârita knew when he said: 'Many mortal men, Brahmans by descent, go forth from this world, impotent and devoid of merit, namely those who practise sexual intercourse without knowing this.'
[If] even this much semen is spilled, whether of one asleep or of one awake,
