Sanskrit
एवं परम्पराप्राप्तमिमं राजर्षयो विदुः । स कालेनेह महता योगो नष्टः परन्तप ॥
evaṃ paramparā-prāptam imaṃ rājarṣayo viduḥ sa kāleneha mahatā yogo naṣṭaḥ parantapa
Translation
This, handed on down the line, the King-Sages knew. This yoga by great efflux of time decayed in the world, O Parantapa.
Annie Besant · The Bhagavad-Gita, translated by Annie Besant (4th ed., 1922) — Wikisource · Public Domain
Explanation
Continuing verse 1’s genealogy, Krishna adds that royal sages preserved this yoga through succession, until it decayed over the vast stretches of time — precisely the gap he is about to fill by re-teaching it to Arjuna. The word “decayed” does real work here: it frames what follows not as an innovation but as a restoration of something lost.