Mahabharata 13.17.154

एतद्धि परमं ब्रह्म स्वयं गीतं स्वयंभुवाऋषयश्चैव देवाश्च स्तुवन्त्येतेन तत्परम्

etaddhi paramaṃ brahma svayaṃ gītaṃ svayaṃbhuvāṛṣayaścaiva devāśca stuvantyetena tatparam

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