Hiranyakeshigrihyasutra 2.1.6.2

2.1.6.2

āpūryamāṇapakṣe puṇye nakṣatregnimupasamādhāya vyāhṛtiparyantaṃ kṛtvā juhoti \ imaṃ me varuṇa \ tattvā yāmi \ tvaṃ no agne \ sa tvaṃ no agne \ tvamagne ayāsi \ prajāpate \ yadasya karmaṇotyarīricam \ iti ca atraike jayābhyātānānrāṣṭrabhṛta ityupajuhvati yathā purastāt \ brāhmaṇānannena pariviṣya puṇyāhaṃ svastyayanamṛddhimiti vācayitvāpareṇāgniṃ prāṅmukhaḥ kumāra upaviśati \2\

In the fortnight (&c., as in the preceding section, Sûtra 2, down to): 'Hail! Good luck!' The boy sits down to the west of the fire, facing the east;