Verse
सुखमात्यन्तिकं यत्तद् बुद्धिग्राह्यमतीन्द्रियम् ।वेत्ति यत्र न चैवायं स्थितश्चलति तत्त्वतः ॥
That in which the soul knows its own true and exceeding bliss, which is perceived by the intelligence and is beyond the senses, wherein established, it can no longer fall away from the spiritual truth of its being.
Gītā 6·21