The various phases of one’s material life, beginning with birth and culminating in death, are all properties of the body and do not affect the soul, just as the apparent waxing and waning of the moon does not affect the moon itself. Such changes are enforced by the imperceptible movements of time.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
विसर्गाद्याः श्मशानान्ता भावा देहस्य नात्मनः । कलानामिव चन्द्रस्य कालेनाव्यक्तवर्त्मना
visargādyāḥ śmaśānāntā bhāvā dehasya nātmanaḥ | kalānāmiva candrasya kālenāvyaktavartmanā
SB 11.7.48