That supreme abode of Mine is not illumined by the sun or moon, nor by fire or electricity. Those who reach it never return to this material world.
Author Name:-Sri Ramanuja
15.6 The sun cannot illumine the light of the self, nor moon, nor fire. For, knowledge is indeed that which illumines them all. External lights, however, are helpful only in removing the darkness which hinders the contact between the senses and the objects. It is the intelligence of the self that reveals such external lights. What reveals this (i.e., the self) is Yoga (i.e., meditation) only. Beginningless Karma is the hindrance. It has been taught that the way for the erasing of Karma is self-surrender to the Lord through detachment etc. That supreme light, reaching which they do not return any more is the self, which is My glory (Vibhuti) and therefore belongs to Me and is a part of Myself. Such is the meaning. The supremacy of this light (i.e., individual self) consists in its capacity to illumine the light of knowledge. Knowledge alone can illuminate all things (including the light of the sun which sheds only physical light on objects.).
Author Name:-Sri Adi Shankaracharya
Sri Adi Shankaracharya
15.6 Na suryah, niether the sun-though possessed of the power of illumining everything; so also, na sasankah, nor the moon; na pavakah, nor even fire; bhasayate, illumines; tat, That [-this (word) refers to the remote word dhama (Abode) at the end of the verse-], that Abode which is of the nature of light. That abode, the State of Visnu, gatva, reaching, attaining; yat, which; they na, do not; nivartante, return, and which the sun etc. do not illumine; tat, that; is mama, My, Visnu’s; paramam, supreme; dhama, Abode, State. Objection: It has been said, ‘reaching which they do not return’. Is it not well known that all goings end, verily, in returning, and unions are followed by separations? How is it said that there is no return for those who come to that Abode? Reply: As to that, listen to the reason: