Rāhu, Eclipses, Antarikṣa, and the Seven Subterranean Heavens
Bila-svarga
यत्र ह वाव न भयमहोरात्रादिभि: कालविभागैरुपलक्ष्यते ॥ ११ ॥
yatra ha vāva na bhayam aho-rātrādibhiḥ kāla-vibhāgair upalakṣyate.
Como en esos planetas subterráneos no hay luz del sol, el tiempo no se divide en días y noches; por ello, el temor producido por el paso del tiempo tampoco existe allí.
In Bhagavatam 5.24.11, Śukadeva explains that in that region the usual time divisions like day and night are not perceived, and thus fear is absent.
He links fear with the experience of time’s changes; where day-night style time markers are not recognized, the atmosphere is described as free from fear.
It suggests that fear increases when the mind is absorbed in changing time and circumstances; steadiness through spiritual focus reduces fear by rising above constant temporal anxiety.