For an explanation of sapta-dvīpa, see Madhya-līlā, Chapter Twenty, verse 218, and Śrīmad-Bhāgavatam, Fifth Canto, Chapters Sixteen and Twenty. In the Siddhānta-śiromaṇi, Chapter One (Golādhyāya), in the Bhuvana-kośa section, the nine khaṇḍas are mentioned as follows:
- aindraṁ kaśeru sakalaṁ kila tāmraparṇam
- anyad gabhastimad ataś ca kumārikākhyam
- nāgaṁ ca saumyam iha vāruṇam antya-khaṇḍaṁ
- gāndharva-saṁjñam iti bhārata-varṣa-madhye
“Within Bhārata-varṣa, there are nine khaṇḍas. They are known as (1) Aindra, (2) Kaśeru, (3) Tāmraparṇa, (4) Gabhastimat, (5) Kumārikā, (6) Nāga, (7) Saumya, (8) Vāruṇa and (9) Gāndharva.”