Bhagavad-gītā As It Is · Text 4.22
Transcendental understanding of action
यदृच्छालाभसंतुष्टो द्वन्द्वातीतो विमत्सरः ।
समः सिद्धावसिद्धौ च कृत्वापि न निबध्यते ॥ २२ ॥
yadṛcchā-lābha-santuṣṭo
dvandvātīto vimatsaraḥ
samaḥ siddhāv asiddhau ca
kṛtvāpi na nibadhyate
He who is satisfied with gain which comes of its own accord, who is free from duality and does not envy, who is steady in both success and failure, is never entangled, although performing actions.
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