Mahabharata 6.24.48

योगस्थः कुरु कर्माणि सङ्गं त्यक्त्वा धनंजयसिद्ध्यसिद्ध्योः समो भूत्वा समत्वं योग उच्यते

yogasthaḥ kuru karmāṇi saṅgaṃ tyaktvā dhanaṃjayasiddhyasiddhyoḥ samo bhūtvā samatvaṃ yoga ucyate

Our plain-language meaning of this verse is waiting for scholar review.