वेत्ति यत्र न चैवायं स्थितश्चलति तत्त्वतः।।6.21।।
6.21 When he (the Yogi) feels that Infinite Bliss which can be grasped by the (pure) intellect and which transcends the senses, and established wherein he never moves from the Reality.
6.21 Yatra, when, at the time when; vetti, one experiences; tat, that; atyantikam, absolute-which is verily limitless, i.e. infinite; sukham, Bliss; yat, which; buddhi-grahyam, can be intuited by the intellect, intuited by the intellect alone, without the help of the senses; and which is atindriyam, beyond the senses, i.e. not objective; (-when one experieneces this kind of Bliss) and sthitah, being established in the nature of the Self; ayam, this person, the illumined one; eva, surely; na calati, does not swerve; tattvatah, from that Reality-i.e. does not deviate from the nature of Reality-. Further,
Sukhamaatyantikam yattad buddhi graahyamateendriyam; Vetti yatra na chaivaayam sthitashchalati tattwatah.
sukham—happiness; ātyantikam—limitless; yat—which; tat—that; buddhi—by intellect; grāhyam—grasp; atīndriyam—transcending the senses; vetti—knows; yatra—wherein; na—never; cha—and; eva—certainly; ayam—he; sthitaḥ—situated; chalati—deviates; tattvataḥ—from the Eternal Truth