On account of his knowing truly the Supreme Soul which is not subject to decay and death, Individual Soul is obliged to frequently return to the world. When, however, Individual Soul succeeds in acquiring that high knowledge, he has no longer to return.
पुनरावृत्तिमाप्नोति परं ज्ञानमवाप्य च। नावबुध्यति तत्त्वेन बुध्यमानोऽजरामरम्॥