BG 18.50
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
I will now state briefly how one who has reached perfection finds the Eternal Spirit, the state of Supreme Wisdom.
Translated by Shri Purohit Swami
Learn from Me, O Arjuna, in brief how one who has attained perfection reaches Brahman—the Eternal, that supreme state of knowledge.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
siddhim—perfection; prāptaḥ—attained; yathā—how; brahma—Brahman; tathā—also; āpnoti—attain; nibodha—hear; me—from me; samāsena—briefly; eva—indeed; kaunteya—Arjun, the son of Kunti; niṣhṭhā—firmly fixed; jñānasya—of knowledge; yā—which; parā—transcendental