Kathakagrihyasutra 64.12

64.12

āpastasya vāyoḥ patnya ūrjo'nnavatyo balavatyaśca |
etā dvādaśāhutayo mithunā ucyante patipatnī yugalasampratyayāt, tathā agnicayana ete mantrāḥ paṭhyante | tatra ca 'ete rāṣṭrabhṛtaḥ' ityupakramya, 'mithunā āhutayaḥ prajātyai dvādaśa' iti śrūyate | tāścāgnau, trayodaśī tu rathamukhe |
āgneyasthālīpākasyā'gnaye svāheti nāmadheyena juhuyāt, parvaṇi sthālīpākasyāgnaye svāhā, agnīṣomābhyāṃ svāheti| taddevatayā vā ṛcā iti pakṣāntaram| ūhavidhānādṛkpakṣo'bhimatatara ityāhuḥ| ṛcamapyanuvākyāmeva kvacidāhuḥ| evameva hi svāhākārāntatvamupapadyate| yājyāyāṃ hi vaṣaṭkārāntatvaṃ bhavet| yājyayaiva tu āryadeśeṣvanuṣṭhānaṃ dṛśyate| prāyaḥ kāmacāra iti tu vyākhyātāraḥ| tatra 'aśanakhādanānliṅgakāḥ yājyāḥ, āhvānaliṅgakāstvanuvākyāḥ' iti lakṣaṇamāhuḥ| yadyapi cānuvākyayaiva homastatra ca svāhākārāntatā, yājyayaiva yāgastatra ca vaṣaṭkārāntatā, 'yājyā api vaṣaṭkaroti' iti śruteḥ, tathāpi yājyayā yadā pākayajñastadā darśapūrṇamāsadevatābhyo juhuyāditi codanayā svāhākāro bhavatītyāhuḥ |