Śatapatha Brāhmaṇa ("of a hundred paths") 5.4.4.5

5.4.4.5

athāntarāṃse 'bhimṛśya japati | niṣasāda ghṛtavrata iti ghṛtavrato vai rājā na vā eṣa sarvasmā iva vadanāya na sarvasmā iva karmaṇe yadeva sādhu vadedyatsādhu kuryāttasmai vā eṣa ca śrotriyaścaitau ha vai dvau manuṣyeṣu ghṛtavratau tasmādāha niṣasāda ghṛtavrata iti varuṇaḥ pastyāsveti viśo vai pastyā vikṣvetyevaitadāha sāmrājyāya sukraturiti rājyāyetyevaitadāha yadāha sāmrājyāya sukraturiti

Having touched him on the chest, he then mutters (Vâg. S. X, 27; Rik S. I, 25, 10), 'He hath sat down, the upholder of the sacred law,'--the king indeed is the upholder of the sacred law, for he is not capable of all and every speech, nor of all and every deed; but that he should speak only what is right, and do what is right, of that he, as well as the Srotriya (the Brâhman versed in sacred writ), is capable; for these two are the upholders of the sacred law among men: therefore he says, 'He hath sat down, the upholder of the sacred law;'--'Varuna, in the home-steads,'--the home-steads are the peasants (clans, people): 'among the peasants' he means to say;--'for supreme rule, he the wise!'--'for kingship' he means to say when he says, 'for supreme rule, he the wise.'