Bhagavad Gita, Chapter 6, Verse 8

ज्ञानविज्ञानतृप्तात्मा कूटस्थो विजितेन्द्रियः । युक्त इत्युच्यते योगी समलोष्टाश्मकाञ्चनः

jñānavijñānatṛptātmā kūṭastho vijitendriyaḥ | yukta ityucyate yogī samaloṣṭāśmakāñcanaḥ

Translation

The Yogin whose self is satisfied with knowledge and wisdom, who remains unshaken, who has conquered the senses, he is said to be a saint — for whom a lump of earth, a stone and gold are equal.

— Alladi Mahadeva Sastri

Word meanings

jñānavijñānatṛptātmā
with wisdom, and, with knowledge, and, satisfied, self, whose, he
kūṭasthaḥ
rock-seated
vijitendriyaḥ
conquered, senses, whose, he
yuktaḥ
balanced
iti
thus
ucyate
is called
yogī
yogi
samaloṣṭāśmakāñcanaḥ
equal, clod, and, rock, and, gold, and, for whom, he

Śaṅkarācārya's commentary

When the Yogin is satisfied with knowledge (jñāna) of things as taught in the scriptures, and with wisdom (vijñāna) — i.e., with the realisation in his own experience of the things so taught — then he is said to be a saint (yukta), he is said to have attained samādhi or steadfastness of mind.