Agniveshyagrihyasutra 2.1.2.5

2.1.2.5

yathā purastād brāhmaṇānannena pariviṣya puṇyāhaṃ svastyayanamṛddhimiti vācayitvā snātāṃ prayatavastrāmalaṅkṛtāṃ brāhmanasambhāṣāmapareṇāgniṃ maṇḍalākāre prāṅmukhamupaveśya traiṇyā śalalyā śalāludrapsamupasaṃgṛhya purastāt pratyaṅ tiṣṭhan vyāhṛtibhī rākāmahaṃ yāste rāka iti dvābhyāmūrdhvaṃ sīmantamunnīyābhimantrayate soma eva no rājetyāhurbrāhmaṇīḥ prajāḥ \

As previously, having served Brahmins with food, having made them recite, 'An auspicious day! Good fortune! Prosperity!', having seated [the wife] to the west of the fire in a circular shape facing east—she being bathed, dressed in clean garments, adorned, and having spoken with Brahmins—having taken up a quill of a three-striped porcupine along with a twig of fragrant wood, standing in front facing west, parting the hair upwards with the mystic utterances and with the two [verses], 'Rākā I [invoke],' 'Those, O Rākā, which are your [favors],' he addresses her with the formula: '"Soma alone is our king," say the Brahmin subjects,