चतुर्युगाख्यान (Caturyuga-Ākhyāna) — Yuga-wise Origins and Measurements of Beings
तस्मात्सप्तर्षयस्ते वै भूतादौ तत्त्वदर्शनात् / ऋषिपुत्रा ऋषीकास्तु मैथुनाद्गर्भसंभवाः
tasmātsaptarṣayaste vai bhūtādau tattvadarśanāt / ṛṣiputrā ṛṣīkāstu maithunādgarbhasaṃbhavāḥ
Therefore those Saptarṣis became renowned, for at the beginning of beings they beheld the true principles. And the Ṛṣīkas, known as the sons of Ṛṣis, were born from the womb through union.