Bhagavatapurana 8.7.10

8.7.10

tamutthitaṃ vīkṣya kulācalaṃ punaḥ samudyatā nirmathituṃ surāsurāḥ /
dadhāra pṛṣṭhena sa lakṣayojana prastāriṇā dvīpa ivāparo mahān //

9. On seeing the great mountain floating, the gods and the Asuras proceeded again to churn; the Lord (in the form of a tortoise), bore the mountain on his back, a lakh of yojanas in extent and like unto another extensive island.