Shatapatha Brahmana 14.1.4.6

14.1.4.6

svāhā samagnistapasāgateti saṃ hyagnistapasāgatāvaraṃ svāhākāraṃ karoti parāṃ devatāmasāveva bandhuḥ saṃ daivyena savitreti saṃ hi daivyena savitrāgata saṃ sūryeṇārūrucateti saṃ hi sūryeṇārūrucata

'Hail! Agni hath united with his heat,'--for Agni has indeed united with his heat; the call of hail he places first, and the deity last: the significance of this is the same as before;--'with the divine Savitri,'--for with the divine Savitri he has indeed united;--'with Sûrya he hath shed light,'--for with Sûrya he has indeed shed light.