परं जैमिनिः, मुख्यत्वात् ॥ १२ ॥
paraṃ jaiminiḥ, mukhyatvāt || 12 ||
paraṃ—The Supreme (Brahman); jaiminiḥ—(so says) Jaimini; mukhyatvāt—on account of that being the primary meaning (of the word ‘Brahman’).
12. The Supreme (Brahman) (is attained by the souls going by the path of the gods), (so says) Jaimini, on account of that being the primary meaning (of the word ‘Brahman’).
Sutras 12-14 give a prima facie view of the matter.
Jaimini thinks that the word ‘Brahman’ in the Chhandogya text refers to the Supreme Brahman, us that is the primary meaning of the word.