Paraskaragrihyasutra 1.14.3

1.14.3

yadahaḥ puṃsā nakṣatreṇa candramā yujyeta tadaharupavāsyāplāvyāhate vāsasī paridhāpya nyagrodhāvarohāñchuṅgām̐śca niśāyāmudapeṣaṃ piṣṭvā pūrvavadāsecanaṃ hiraṇyagarbho 'dbhyaḥ saṃbhṛta ityetābhyām \3\

On a day on which the moon stands in conjunction with a Nakshatra (that has a name) of masculine gender, on that day, after having caused (his wife) to fast, to bathe, and to put on two garments which have not yet been washed, and after having in the night-time crushed in water descending roots and shoots of a Nyagrodha tree, he inserts (that into her right nostril) as above, with the two (verses), 'The gold-child' (Vâg. Samh. XIII, 4) and 'Formed of water' (ibid. XXXI, 17);