Verse
न तद्भासयते सूर्यो न शशांको न पावकः ।यद्गत्वा न निवर्तंते तद्धाम परमं मम ॥
There we find the timeless being which is not illumined by sun or moon or fire (but is itself the light of the presence of the eternal Purusha); having gone thither they return not; that is the highest eternal status of My Being.
Gītā 15·6