Shatapatha Brahmana 7.1.1.1

7.1.1.1

gārhapatyaṃ ceṣyanpalāśaśākhayā vyudūhati | avasyati haitadyadgārhapatyaṃ cinoti ya u vai ke cāgnicito 'syāmeva te 'vasitāstadyadvyudūhatyavasitāneva tadvyudūhati nedavasitānadhyavasyānīti

Being about to build the Gârhapatya (fire-place), he sweeps (its site) with a Palâsa (butea frondosa) branch. For when he builds the Gârhapatya he settles on that place; and whatsoever builders of fire-altars (there have been), they are indeed settled on this earth; and when he sweeps (that place) he thereby sweeps away those settled (there before hire), thinking, 'Lest I should settle on those already settled (here).'