Anandakanda 1.16.30

1.16.30

saṃbhoge sthavirāgniyoṣiti made yūnāṃ smare darpahā nityānandanidānam ādipuruṣair apyāhitāsvādanaḥ /
vācāṃ siddhikaraḥ prakṛṣṭakavitāsaṃdarbhasaṃpādanaḥ saukhyārogyaviśeṣayauvanakalāsāmagryasaṃdhāyakaḥ //

In sexual congress it destroys the arrogance of young men whose fire of youth has grown proud with a woman; it is the cause of constant bliss, its taste relished even by the primordial lords; / it accomplishes mastery of speech; produces excellent poetic compositions; and brings together a wealth of happiness, health, extraordinary youth, and artistic accomplishments.