Ṛgvidhāna · Chapter 3.26

śukla.pakṣe.śubhe.vāre.sunakṣatre.sugocare./
dvādaśyām.putra.kāmāya.carum.kurvīta.vaiṣṇavam.//

dampatyor.upavāsaḥ.syād.ekādaśyām.sula.ālaye./
ṛgbhiḥ.ṣoḍaśabhiḥ.samyag.arcayitvā.janārdanam.//

carum.puruṣa.sūktena.śrapayet.putra.kāmyayā./
prāpnuyād.vaiṣṇavam.putram.acirāt.santati.kṣamam.//

dvādaśa.dvādaśīḥ.samyak.payasā.nirvapet.carum./
yaḥ.karoti.sahasram.syād.yāti.viṣṇoḥ.param.padam.//

hutvā.agnim.vidhivat.samyag.ṛgbhiḥ.ṣoḍaśabhir.budhaḥ./
kṛta.añjalipuṭo.bhūtvā.stavam.tābhiḥ.prayojayet.//