Madhvaon Brahma Sūtra 1.4.9
Dvaita Vedānta
Numbered 1.4.10 in this text
Sūtra
ज्योतिरुपक्रमात्तु तथाह्यधीयत एके
jyotirupakramāttu tathāhyadhīyata eke
Sūtra translation
Also the '(term) Jyotis (the name of a sacrifice) denotes Brahman only ; for tome (sakhins) read to that effect from the very commencement.
It is only Vishnu who is declared also by the words which by the established usage, are the names of sacrifi- cial acts such as Jyotishtoma. For some sakhins (Aitare- yins) read as follows; “This (Narayana) has entered this body (of Chaturmukha, the four-faced)”; thus com- mencing, the text proceeds ‘‘ All these Riks, all scrip- ture, all sounds, have one thing (Brahman) to declare. He is Prana, let him know that Prana is Riks, (because they all declare His attributes).” (AA. II. 2. a).