Devibhagavatapurana 8.3.17_2

Devībhāgavatapurāṇa 8.3.17_2

kuśadvīpaḥ krauñcadvīpaḥ śākadvīpaśca puṣkaraḥ |
teṣāṃ ca parimāṇaṃ tu dviguṇaṃ cottarottaram ||