Śatapatha Brāhmaṇa ("of a hundred paths") 7.2.1.4

7.2.1.4

tadvā etatkriyate | yaddevā akurvannidaṃ nu tattama sa pāpmā devairevāpahato yattvetatkaroti yaddevā akurvaṃstatkaravāṇītyatho ya eva pāpmā yā nirṛtistametābhirapahate tadya !detābhiḥ pāpmānaṃ nirṛtimapahate tasmādetā nairṛtyaḥ

Now that same thing which the gods did, is done here: even now that darkness, that evil, has indeed been dispelled by the gods themselves; but when he now does this, it is because he thinks, 'I must do what the gods did.' And, besides, he removes, by means of these (bricks), whatever evil, whatever corruption there is; and because he removes by them evil, corruption (nirriti), therefore these are Nirriti's (bricks).