Śatapatha Brāhmaṇa ("of a hundred paths") 2.1.2.1

2.1.2.1

kṛttikāsvagnī ādadhīta | etā vā agninakṣatraṃ yatkṛttikāstadvai saloma yo 'gninakṣatre 'gnī ādadhātai tasmātkṛttikāsvādadhīta

He may set up the two fires under the Krittikâs; for they, the Krittikâs, are doubtless Agni's asterism, so that if he sets up his fires under Agni's asterism, (he will bring about) a correspondence (between his fires and the asterism): for this reason he may set up his fires under the Krittikâs.