18.50 Hear it briefly Krishna speaks

सिद्धिं प्राप्तो यथा ब्रह्म तथाप्नोति निबोध मे
समासेनैव कौन्तेय निष्ठा ज्ञानस्य या परा

siddhiṁ prāpto yathā brahma tathāpnoti nibodha me
samāsenaiva kaunteya niṣhṭhā jñānasya yā parā

Hear from me briefly how one who has reached that perfection attains Brahman.

Explanation

Hear it briefly.

How one who has reached that perfection attains Brahman — and the promise of brevity is kept: four verses.

Chapter 6 needed thirty verses to describe this. Here it is compressed, because by chapter 18 the vocabulary is already built.