Mānasasṛṣṭi-varṇana (Account of Mind-born Creation) | मानससृष्टिवर्णनम्
तया स रमते सार्द्धं तस्मात्सा रतिरुच्यते / प्रथमः संप्रयोगः स कल्पादौ समवर्त्तत
tayā sa ramate sārddhaṃ tasmātsā ratirucyate / prathamaḥ saṃprayogaḥ sa kalpādau samavarttata
He delights together with her; therefore she is called “Rati.” That first union came to pass at the very beginning of the kalpa.