Mahabharata 13.135.117

भूर्भुवः स्वस्तरुस्तारः सविता प्रपितामहःयज्ञो यज्ञपतिर्यज्वा यज्ञाङ्गो यज्ञवाहनः

bhūrbhuvaḥ svastarustāraḥ savitā prapitāmahaḥyajño yajñapatiryajvā yajñāṅgo yajñavāhanaḥ

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