Sanskrit
सुखमात्यन्तिकं यत्तद् बुद्धिग्राह्यमतीन्द्रियम् । वेत्ति यत्र न चैवाऽयं स्थितश्चलति तत्त्वतः ॥
sukham ātyantikaṃ yat tad buddhigrāhyam atīndriyam vetti yatra na caivāyaṃ sthitaś calati tattvataḥ
Translation
That in which he findeth the supreme delight which the Reason can grasp beyond the senses, wherein established he moveth not from the Reality;
Annie Besant · The Bhagavad-Gita, translated by Annie Besant (4th ed., 1922) — Wikisource · Public Domain
Explanation
Continuing the chain from verse 20, this names the delight as atyantika — absolute, beyond all limit — and specifically as something the buddhi (higher reason) grasps directly, bypassing sense perception entirely. Once established there, the text says, one simply doesn’t move from what’s real (tattvatah) — stability, not intensity, is the mark of it.