Jaiminīya (Talavakāra) Brāhmaṇa 25.153

In it cattle are held fast.
He becomes possessed of cattle who knows this.
Moreover, it is restrained, as it were: 'Here, refreshments! Here, refreshments!'
For by this [sāman] he then warded them off from in front.
'Him, the son of the river, the ten fingers cleanse…'—since it contains 'river', contains 'ocean', that is the form of this day.
This day has water as its share.
Regarding this they say: 'Those who make the conclusion on Gāyatrī verses go away from the Pavamāna [chants] of Triṣṭubh [meter].'
These [verses] contain Sūrya;
moreover, they are luminous (ṣandrīḥ).
Thereby they do not go away from the Pavamāna [chants] of Triṣṭubh [meter].
Upon them is the Vāmadevya with the word 'here' (ihavat).
Cattle are borders;
cattle are the Raivata;
cattle are the Vāmadevya with the word 'here'.
Praising with this, they become rich in cattle, as it were.
And it is restrained, as it were: 'Him, the ten fingers here cleanse, the son of the river, here…'
For by this very [sāman] he then warded them off from in front.

'The wealthy ones, for our revelry together…'

thus they are the Revatī verses.

They enter upon the level from the level.

The final verses of the midday [pressing] are Gāyatrī verses.