Kaushitakagrihyasutra 1.14: atha caturdaśaḥ khaṇḍaḥ

In the seventh month, in the first pregnancy, the parting of the hair.

Having seated her, bathed and wearing an unwashed garment, behind the fire, he offers oblations of the boiled sacrificial mess.

Some say [it is an oblation] of boiled rice with beans.

The utensils should be male-associated,

and also the constellation.

[He offers with the verses:] ‘May Dhātṛ give to the giver’ (dhātā dadātu dāśuṣe), ‘Dhātṛ rules over offspring and wealth’ (dhātā prajāyā uta rāya īśe), the three [verses beginning] ‘Nejameṣa, fly away’ (nejameṣa parāpata), and the sixth [is] ‘O Prajāpati’ (prajāpate).

With a porcupine quill with three white spots, or with a needle of darbha grass, together with unripe fruits of the udumbara tree, he parts her hair upward from the middle with: ‘Bhūr, bhuvaḥ, svaḥ!’

Placing it on her lap, having tied it with a threefold [string], he binds it around her neck with: ‘This is a tree full of sap; be full of sap and fruitful!’

Then he says to two lute players: ‘Sing of the king, or whoever else is more heroic!’

Having thrown unhusked grain into a water pot, he causes her to drink with the six-verse hymn, ‘May Viṣṇu prepare the womb’ (viṣṇur yoniṃ kalpayatu), ‘Nejameṣa, fly away’ (nejameṣa parāpata), and with the four [verses beginning] ‘Rākā I [invoke]’ (rākām aham).

Then he touches her belly with: ‘You are the winged bird Garutmat; the trivṛt [stoma] is your head, the Gāyatrī your eye, the metres your limbs, the Yajus formulas your name, the Sāman your body, the Vāmadevya your middle, the Bṛhat and Rathantara your two wings, the Yajñāyajñiya your tail, the hearths your hooves.’ He should cause them to sing the Modamānī or the Mahāhaimavatī chant.

A bull is the sacrificial fee.