Vamśānukramaṇikā: Varuṇa–Kali Descendants and the Naiṛta Grahas
Genealogical Catalogue
भाव्यः सो ऽनागते तस्मिन्मनुः सावर्णिकेन्तरे / मेरुपृष्ठे तपो घोरमद्यापि चरते प्रभुः
bhāvyaḥ so 'nāgate tasminmanuḥ sāvarṇikentare / merupṛṣṭhe tapo ghoramadyāpi carate prabhuḥ
In that future Sāvarṇika Manvantara, he shall become Manu; the Lord even now performs fierce austerities upon the back of Meru.