Śatapatha Brāhmaṇa ("of a hundred paths") 9.3.1.13

9.3.1.13

yadveva vaiśvānaramārutānjuhoti | kṣatraṃ vai vaiśvānaro viṇmārutāḥ kṣatraṃ ca tadviśaṃ ca karoti vaiśvānaram pūrvaṃ juhoti kṣatraṃ tatkṛtvā viśaṃ karoti

And, again, as to why he offers the Vaisvânara and Mârutas,--the Vaisvânara is the ruling power (chieftaincy), and the Mârutas are the clan: he thus sets up both the chief and the clan. The Vaisvânara he offers first: thus, having set up the chief, he sets up the clan.