Bhagavad Gita 18.50
सिद्धिं प्राप्तो यथा ब्रह्म तथाप्नोति निबोध मे । समासेनैव कौन्तेय निष्ठा ज्ञानस्य या परा ॥
siddhiṃ prāpto yathā brahma tathāpnoti nibodha me / samāsenaiva kaunteya niṣṭhā jñānasya yā parā
Translation
Learn from me briefly, Kaunteya, how having reached perfection one attains Brahman, which is the supreme consummation of knowledge.
Reflection
What inward accomplishment have you reached that you have not yet allowed to ripen further?
Read this verse in its chapter: Chapter Eighteen
Krishna promises a compressed account. From siddhi, the accomplishment just described, to brahma-prapti, arriving in the absolute. Samasena, in brief. This is the chapter's last theoretical sequence before the practical instructions in verses 56 onward. Nishtha jnanasya ya para, the final standing-place of knowledge. The student who has gotten this far in the Gita has heard the full arc; the next several verses are the summary trail. Notice the calm. After all the diagnostic sweeps, the tone simplifies. The destination is being pointed to directly, not theorized. The next three verses will name the conditions that ripen the brahma-prapti.