Agniveshyagrihyasutra 2.5.6

We shall explain the sacrifice for one desirous of offspring.

On a riverbank or in the shade of an aśvattha tree, having smeared a square sacrificial ground the size of a cowhide with cow dung, having established Brahman in the eastern quarter, and Dhātṛ and Vidhātṛ on the two flanks—Dhātṛ to the south and Vidhātṛ to the left, Dhātṛ black in color, Vidhātṛ white in color, [Brahman] four-faced and multi-colored—he should then worship them.

First he should invoke Brahman.

He should invoke Parameṣṭhin.

He should invoke Hiraṇyagarbha. Having thus invoked them with the sacred syllable Om, having sprinkled [them] with the three [verses]: "O Waters, you are indeed the sources of bliss...", with the four [verses]: "Golden of color, pure, purifying...", and with this section: "The purifying one, the heavenly folk...", [he presents] pure cooked rice to Brahman, bean-rice to Dhātṛ, and yellow rice to Vidhātṛ.

Then having summoned that woman of the sacrificer [with the verse]: "You are that, you are light, you who have gone to the Lord of All, the bestower of names...", on the new-moon day, on the full-moon day, at the two solstices, at the Vyatīpāta conjunction, at the equinox, under the Tiṣya, Rohiṇī, or Śravaṇā asterism, or on her birth [asterism], when she has bathed after her menstrual period, having made her put on an unwashed garment, having given gold to the teacher, having put on clean garments, having sipped water, having adorned [himself and her] with perfume and white flowers, then having performed [the rites] from the drawing of lines on the sacrificial area up to setting up the fire, having strewn [grass] all around with: "Seven are your kindling sticks, O Agni, seven your tongues, seven the sages, seven the beloved abodes...", having seated [her] to the south among the women, having performed [the rites] from the putting on of fuel up to the face of the fire, he should offer from the cooked [food] with the Puruṣasūkta.

He offers [with] the offering verse and the introductory verse, two by two.

Then verse by verse he offers clarified butter libations.

He should offer one thousand and eight [oblations] with the Sāvitrī verse.

Having touched water, he offers eight thousand [oblations] with the Sudarśana [mantra], and eight thousand with the seed-syllable of Agni, accompanied by the sacred syllable Om.

Eight thousand [oblations] with the sacred syllable Om, or one hundred and eight, or twenty-eight.

He makes the intermediate offering; it is taught as one hundred and eight.

From the Sviṣṭakṛt oblation onward, [the ritual] is established up to the giving of a choice cow [as dakṣiṇā].

Then he offers the residue of the libations onto her head.

With the sacred syllable Om, ending with homage, he should perform the clearance of the sacrificial site.

Thereby she becomes pregnant for him.

Sons produced in this manner are never lost; they are never lost.

Now, having worshiped the Blessed Lord Viṣṇu on the twelfth lunar day, and having muttered [the mantra of] Sudarśana eight thousand times, [performing this] three times in succession, a son necessarily comes to be; so he said; a son comes to be; so he said.

At the times prescribed for Śiva, or in rivers, or in a reservoir of clean water, with the middle leaf of a palāśa tree, having performed an aspersion eight thousand, or one hundred and eight, or twenty-eight times with the three [verses], "For water is indeed conferring happiness...", with the four [verses], "Golden of hue, pure, purifying...", and with the section, "Pavamānaḥ suvarjanaḥ...", he performs the aspersion eight thousand times with the Gāyatrī,

and with the Puruṣasūkta, with this section, "A thousand-headed is the Puruṣa...".

"A son comes to be," says the venerable Āgniveśya. ||6