Taittiriyabrahmana 3.10.9.2

3.10.9.2

vṛścátaś ca //
sā́_eṣā́ mīmām̐sā́_agnihotrá evá sáṃpannā /
átho āhuḥ /
sárveṣu yajñakratúṣv íti //
hóṣyann apá úpaspṛśet /
vídyud asi vídya me pāpmā́nam íti /
átha hutvā́_upaspṛ́śet /
vṛ́śṭir asi vṛ́śca me pāpmā́nam íti /
yákṣyámāṇo vā_iṣṭvā́ vā /
ví ca ha_evā́sya_eté deváte pāpmā́naṃ dyátaḥ /

cut away his evil.
This discussion indeed finds its fulfillment in the Agnihotra.
And they also say:
"In all sacrificial rites."
When about to offer, he should touch water [saying]:
"You are lightning (vidyut); unbind (vidya) my evil!"
Then having offered, he should touch [water saying]:
"You are rain (vṛṣṭi); cut away (vṛśca) my evil!"
Whether about to sacrifice or having sacrificed,
these two deities unbind and