Mahabharata 14.23.2

प्राणापानावुदानश्च समानो व्यान एव चपञ्चहोतॄनथैतान्वै परं भावं विदुर्बुधाः

prāṇāpānāvudānaśca samāno vyāna eva capañcahotṝnathaitānvai paraṃ bhāvaṃ vidurbudhāḥ

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