Verse
ध्यानेनात्मनि पश्यन्ति केचिदात्मानमात्मना ।अन्ये सांख्येन योगेन कर्मयोगेन चापरे ॥
This knowledge comes by an inner meditation through which the eternal Self becomes apparent to us in our self-existence. Or it comes by the Yoga of the Sankhyas (the separation of the soul from nature). Or it comes by the Yoga of works.
Gītā 13·25