Mahabharata 13.151.4

पितामहो जगन्नाथः सावित्री ब्रह्मणः सतीवेदभूरथ कर्ता च विष्णुर्नारायणः प्रभुः

pitāmaho jagannāthaḥ sāvitrī brahmaṇaḥ satīvedabhūratha kartā ca viṣṇurnārāyaṇaḥ prabhuḥ

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