Yāska's Nirukta 7.8

7.8

tisra eva devatā ity uktam purastāt,.tāsām bhakti sāhacaryam vyākhyāsyāmah/[765].[asaṃvijñāta devatā pade mantre bhakti ā sāhacaryena vā yathā devatā gamyeta ity evam artham bhakti sāhacaryam ucyate ḍ.765]
atha etāny agni bhaktīny.-.ayam lokaḥ prātaḥ savanam vasanto gāyatrī trivṛt stomas..rathantaram sāma ye ca deva ganāḥ samāmnātāḥ prathame sthāne/[765]
agnāyī pṛthivī īḷā iti striyah/[765].($)
atha asya karma vahanaṃś ca havisām āvāhanaṃś ca devatānām yac ca kiṃcid dārṣti visayikam agni karma eva tat/[765].[yat samyogād asaty apy agni śabde āgneya eva mantro bhavati ḍ.766]
atha asya saṃstavikā devāḥ.[yaiḥ saha agniḥ stūyate,.tad yathā ḍ.767].indraḥ somo varuṇaḥ parjanya ṛtu1p āgnāvaisnavam havis/[765]
na tv ṛc saṃstavikī daśatayīsu vidyate/[765]
atha apy āgnāpausnam havis na tu saṃstavah,.tatra etām vibhakti stutim ṛcam udāharanti/[765]