Aitareyabrahmana 3.23

3.23

In the beginning, Ṛc and Sāman were here. Sā indeed was the name of the Ṛc, and Ama was the name of the Sāman.
That Ṛc addressed the Sāman: 'Let us unite as a copulative pair for procreation.'
'No,' said the Sāman, 'greater indeed than this is my greatness.'
Becoming two, they [both] addressed him; he did not converse back to the two of them.
Becoming three, they addressed him; he united with the three.
Because he united with three, therefore they praise with three [verses], they chant with three;
for the Sāman is commensurate with three.
Therefore there are many wives for one [man], but not many husbands for one [woman].
Because Sā and Ama united, it became Sāman: that is the Sāman-hood of the Sāman.
He who knows this becomes suitable.
He indeed who exists, who attains superiority, becomes suitable;
for they censure [one saying]: 'He is unsuitable.'
Becoming five each, they arranged themselves:
the call, the sound hiṃ, the prelude, the first Ṛc, the loud chant,
the middle [Ṛc], the response, the final [Ṛc], the cadence, and the vaṣaṭ-call.
Because they arranged themselves, having each become five, therefore they say:
'The sacrifice is fivefold, cattle are fivefold.'
And because they attained to the virāj of ten parts, therefore they say:
'The sacrifice is established in the ten-part virāj.'
The stotriya verse is the self, the anurūpa is offspring, the inserted verse is the wife,
the pragātha is cattle, the hymn is the home.
He indeed dwells in the home with offspring and cattle, both in this world and in that world, who knows thus.