Śatapatha Brāhmaṇa ("of a hundred paths") 9.4.3.1

9.4.3.1

atha pratyetya dhiṣṇyānāṃ kāle dhiṣṇyānnivapati | agnaya ete yaddhiṣṇyā agnīnevaitaccinoti tā etā viśaḥ kṣatramayamagniścitaḥ kṣatraṃ ca tadviśaṃ ca karotyamum pūrvaṃ cinotyathemānkṣatraṃ tatkṛtvā viśaṃ karoti

Having now returned (to the hall), he, at the proper time, throws up the Dhishnyas (fire-hearths)--these hearths are fires: he thus builds up fire-altars. They are the clansmen, and the built-up fire-altar is the chieftaincy: he thus sets up both the chieftaincy and the clan. The former (altar) he builds up first, then these (hearths): thus he sets up the clan after setting up the chieftaincy.