Bhagavad-Gita The Song Divine Chapter 6 (stanza 1-11)

Sri Bhagavan said: He who does his duty without expecting the fruit of action is a Sanyasi  (Sankhya Yogi) and a Yogi (Karma Yogi) both. He is no Sanyasi (renouncer)  who has merely renounced the sacred fire; evewn so, he is no Yogi who has merely given up all activity. … (1)

Arjun, you must know that what they call Sanyasa is no other than Yoga; for none becomes a Yogi, who has not abandoned his 'Sankalpas (thoughts of the world). …………. (2)

To the contemplative soul who desires to attain Karma Yoga, selfless action is said to be the means; for the same man when he is established in Yoga, absence of all 'Sankalpas' (thought of the world) is said to be the way to blessedness. ………….(3)

When a man ceases to have any attachment for the objects of senses and for actions, and has renounced all 'Sankalpas' (thought of the world), he is said to have attained Yoga. …… (4)

One should lift oneself by one's own efforts and should not degrade oneself; for one's own self is one's friend, and one's own self is one's enemy. ……….. (5)

one's own Self is the friend of the soul by whom the lower self (consisting of the mind, senses and body) has been conquered; even so, the very self of him, who has not conquered his lower self, behaves antagonistically like an enemy. …….. (6)

The Supreme Spirit is rooted in the knowledge of the self-controlled man whose mind is perfectly serene in the midst of pairs of opposites, such as cold and heat, joy and sorrow, and honor and ignominy. ….. (7)

The Yogi whose mind is sated with Jnana (knowledge of manifest Divinity), who is unmoved under any circumstances, whose senses are completely under control, and to whom earth, stone and gold are all alike, is spoken of as a God-realized soul. ……. (8)

He who looks upon well-wishers and neutrals as well as mediators, friends and foes, relatives and inimical, the virtuous and the sinful with equanimity, stands supreme. … (9)

Living in seclusion all by himself, the Yogi who has controlled his mind and body, and is free from desires and void of possessions, should constantly engage his mind in meditation. (10)

Having firmly set his seat in a spot which is free from dirt and other impurities with the sacred Kusa grass, a deerskin and a cloth spread thereon, one upon the other, (Kusa below, deerskin in the middle and cloth uppermost), neither very high nor very low. …. (11)