Shatapatha Brahmana 14.3.1.18

14.3.1.18

nābhirṛtasya saprathā iti satyam vā ṛtaṃ satyasya nābhiḥ saprathā ityevaitadāha sa no viśvāyuḥ saprathā iti sa naḥ sarvāyuḥ saprathā ityevaitadāha

--'Mighty navel of the divine order,'--the divine order being the truth, he thereby means to say, 'The mighty navel of the truth;'--'that mighty one (be) unto us of all life;'--'that mighty one (be) unto us (a bestower) of the complete (term of) life,' he thereby means to say;