Hiranyakeshigrihyasutra 2.1.2.2

2.1.2.2

tṛtīye māsyāpūryamāṇapakṣe puṇye nakṣatregnimupasamādhāya vyāhṛtiparyantaṃ kṛtvā \ dhātā dadātu no rayim \ iti catasro dhātrīrjuhoti \ imaṃ me varuṇa \ tattvā yāmi \ tvaṃ no agne \ sa tvaṃ no agne \ tvamagne ayāsi \ prajāpate \ yadasya karmaṇotparīricam \ iti ca \ atraike jayābhyātānānrāṣṭrabhṛta ityupajuhvati yathā purastāt \ brāhmaṇānannena pariviṣya puṇyāhaṃ svastyayanamṛddhimiti vācayitvā snātāṃ prayatavastrāmalaṃkṛtāṃ brāhmaṇasaṃbhāṣāmapareṇāgniṃ maṇḍalāgāre prācīmupaveśya \ vṛṣāsi \ iti tasyā dakṣiṇe pāṇau yavamādadhāti \2\

In the third month, in the fortnight of the increasing moon, under an auspicious constellation (&c.; see the preceding section, Sûtras 2 and 3, down to:) in a round apartment. He gives her a barley-grain in her right hand with (the formula), 'A man art thou;'