Śatapatha Brāhmaṇa ("of a hundred paths") 1.4.3.22

1.4.3.22

sa yathā haivāgnim | sāmidhenībiḥ samiddhamāpadyārttiṃ nyetyevaṃ haiva brāhmaṇaṃ sāmidhenīrvidvāṃsaṃ samanubruvantamanuvyāhṛtyārttiṃ nyeti

For in like manner as one undergoes suffering on approaching the fire that has been kindled by means of the kindling verses, so also does one undergo suffering for cursing a priest (brâhmana) who knows and recites the kindling verses.