Mahabharata 12.328.24

रुद्रो नारायणश्चैव सत्त्वमेकं द्विधाकृतम्लोके चरति कौन्तेय व्यक्तिस्थं सर्वकर्मसु

rudro nārāyaṇaścaiva sattvamekaṃ dvidhākṛtamloke carati kaunteya vyaktisthaṃ sarvakarmasu

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