Mahabharata 13.14.20
ब्रह्मा शिवः काश्यपश्च नद्यो देवा मनोनुगाःक्षेत्रौषध्यो यज्ञवाहाच्छन्दांस्यृषिगणा धरा
brahmā śivaḥ kāśyapaśca nadyo devā manonugāḥkṣetrauṣadhyo yajñavāhācchandāṃsyṛṣigaṇā dharā
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book