lokāloka iti samākhyā yad anenācalena lokālokasyāntarvar-tināvasthāpyate.

loka-with light (or with inhabitants); alokah-without light (or without inhabitants); iti-in this way; samakhya-designation; yat-which; anena-by this; acalena-mountain; loka-of the land inhabited by living entities; alokasya-and of the land not inhabited by living entities; antarvartina-which is in the middle; avasthapyate-is established.