Jaiminīya (Talavakāra) Brāhmaṇa 1.166

By means of the final vowel, proper food is finally granted to the gods.
At the end of the Pavamāna [stotra], it is equal to the verse.
They do not let the sāman exceed the verse, nor the verse exceed the sāman.
When they do not praise here and here in the Pavamāna, it is for its very equality, to fit what is equal.
In front, the Gāyatra has a post-word sound; at the end of the Pavamāna, there is a post-word sound.
Therefore creatures have breaths on both sides, upward and downward.
Indeed, a boat that father and son row together does not come to harm.
The sacrifice is this divine boat.
Father and son row it together:
the Auśana is in front, the Kāva is at the end, for the uninjured state of the sacrifice.
Therefore, when they board a boat quickly, father and son board first.
There are five meters in the Ārbhava Pavamāna; there are seven sāmans;
they amount to twelve.
Twelve months are the year.
There are five sāmans in the Midday Pavamāna;
they are the seasons.
The months are arranged in the Ārbhava Pavamāna, the seasons in the Midday [Pavamāna].
The sacrifice is this very year arranged.

This year, indeed, is Prajāpati.

For six months, he stands holding up one of his two feet, then the other.

When he holds up heat, then he becomes hot above here, and then he is cold below.

Therefore, in summer it is found to be hot above and cold below.

Therefore also, in summer they draw cold water from the well.

Now, when he holds up cold, then he becomes cold above here, and then he is hot below.

Therefore, in winter it is found to be cold above and hot below.