Mahabharata 12.203.13

पितॄन्देवानृषींश्चैव तथा वै यक्षदानवान्नागासुरमनुष्यांश्च सृजते परमोऽव्ययः

pitṝndevānṛṣīṃścaiva tathā vai yakṣadānavānnāgāsuramanuṣyāṃśca sṛjate paramo'vyayaḥ

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