Manavashrautasutra 6.2.3.8

6.2.3.8

kṛttikā nakṣatram \ agnir devatā \\ itiprabhṛtibhir nakṣatreṣṭakāḥ purastāt pratīcīr upadadhāti \\ agne rucaḥ stha \\ iti sarvatrānuṣajati / purastād viśākhayoḥ

With [the formulas] beginning with “Kṛttikās the lunar mansion, Agni the deity,” he places the nakṣatreṣṭakā bricks in the east facing west. He attaches “You are the lights of Agni” to all of them. In front of the two Viśākhās,