Bhagavatapurana 5.20.13

5.20.13

evaṃ surodād bahis tad-dvi-guṇaḥ samānenāvṛto ghṛtodena yathā-pūrvaḥ kuśa-dvīpo yasmin kuśa-stambo deva-kṛtas tad-dvīpākhyākaro jvalana ivāparaḥ sva-śaṣpa-rociṣā diśo virājayati //

13. Similarly beyond the Suroda is situated Kusadwipa like the preceding one, double in extent and surrounded by the sea of ghee (Ghritoda) equal in extent to itself; in this Dwipa stands a clump of kusa planted by the gods giving the Dwipa its name, refulgent like

another burning fire and illuminating all the cardinal points by the lustre of its blades.