Ābhūta-saṃplava & Loka-vibhāga
Dissolution Threshold and the Fourteen Abodes
भूम्यन्तरं यदादित्यादन्तरिक्षं भुवः स्मृतम् / सूर्यध्रुवान्तरं यच्च स्वर्गलोको दिवः स्मृतः
bhūmyantaraṃ yadādityādantarikṣaṃ bhuvaḥ smṛtam / sūryadhruvāntaraṃ yacca svargaloko divaḥ smṛtaḥ
The expanse between the earth and Āditya is remembered as Bhuvaḥ—the mid-region, the firmament. And the expanse between Sūrya and Dhruva is remembered as Divaḥ—Svargaloka, the heavenly world.