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कर्मण्यकर्म य: पश्येदकर्मणि च कर्म य: ।
स बुद्धिमान् मनुष्येषु स युक्त: कृत्स्नकर्मकृत्  ॥

karmaṇy-akarma ya: paśyed-akarmaṇi ca karma ya:
sa buddhimān manuṣyeṣu sa yukta: kṛtsna-karma-kṛt – 4.18 

Whoever sees inaction or actionless-ness in action, and activity in inaction, is verily the wise person. He indeed is spiritually integrated. He is verily the all-doer, all-performer.