One verse

Bhagavad Gita 6.8

6.8

ज्ञानविज्ञानतृप्तात्मा कूटस्थो विजितेन्द्रियः | युक्त इत्युच्यते योगी समलोष्टाश्मकाञ्चनः ||६-८||

jñānavijñānatṛptātmā kūṭastho vijitendriyaḥ . yukta ityucyate yogī samaloṣṭāśmakāñcanaḥ ||6-8||

jñāna
by acquired knowledge
vijñāna
and realized knowledge
tṛpta
satisfied
ātmā
a living entity
kūṭa-sthaḥ
spiritually situated
vijita-indriyaḥ
sensually controlled
yuktaḥ
competent for self-realization
iti
thus
ucyate
is said
yogī
a mystic
sama
equipoised
loṣṭra
pebbles
aśma
stone
kāñcanaḥ
gold

A person is said to be established in self-realization and is called a yogī [or mystic] when he is fully satisfied by virtue of acquired knowledge and realization. Such a person is situated in transcendence and is self-controlled. He sees everything – whether it be pebbles, stones or gold – as the same.