Jaiminīya (Talavakāra) Brāhmaṇa 6.22

The ṛṣi Bharadvāja saw the Bṛhat-form of speech.
Indeed, this Bṛhat is the lineage of Bharadvāja.
Mind is the Bṛhat.
Prajāpati is the Bṛhat.
He attains the state of Prajāpati who knows thus.
"The hotṛ, who knows all":
"ho-" is the form of the Bṛhat.
This day is connected to the Bṛhat.
"Mitra we call upon", "Indra indeed the singers [exalt with] the Bṛhat", "In Indra, in Agni, reverence, the Bṛhat" —
thus the Ājya [śastras] are of uniform nature; all of them indeed are connected to the Bṛhat.
For this day is the ruling class.
Therefore all kings have one counsel, one voice.
Two [verses] contain the word "mahat" [great]; two contain the word "bṛhat" [vast].
This indeed is the visible form of the Bṛhat, that which is "great", that which is "bṛhat".
Directly they enter into the Bṛhat.
There is the fifteenfold stoma — faculty and vital power, indeed, is the fifteenfold [stoma] — it is in faculty and vital power that they proceed establishing themselves.

"As a bull purify yourself in a stream":
thus there are bull-possessing Gāyatrī verses for the midday pavamāna.
For this day is connected to the Bṛhat.
[The bull] is the Triṣṭubh form of the ruling class.
"And for the Marut-possessing [Indra], intoxicating":
thus there are [verses] containing the word "Marut-possessing".
"Marut-possessing", indeed, is the form of midday.
They do not depart from the form of the midday.
"Thee, the upholder of the two press-stones":
thus [it is] for the stability of the day.
"With this thought, purifying, golden-hued, purify yourself in a stream":
thus there are [verses] containing the word "hari" [golden-hued].
"Hari-possessing", indeed, is the form of the Triṣṭubh.
This day is connected to the Triṣṭubh.