Bhagavadgita 2.190

Bhagavadgītābhāṣya (Śāṅkarabhāṣya) 2.190

yogasthaḥ kuru karmāṇi saṅgaṃ tyaktvā dhanaṃjaya |
siddhy-asiddhyoḥ samo bhūtvā samatvaṃ yoga ucyate ||