Brahma Sūtra 1.4.9
Śaṅkara
Advaita Vedānta
Sūtra
ज्योतिरुपक्रमा तु तथाह्यधीयत एके
jyotirupakramā tu tathāhyadhīyata eke
Sūtra translation
But the (elements) beginning with light (are meant by the term ajâ); for some read so in their text.
By the term ajâ we have to understand the causal matter of the four classes of beings, which matter has sprung from the highest
Rāmānuja
Viśiṣṭādvaita Vedānta
Sūtra
ज्योतिरुपक्रमा तु तथा ह्यधीयत एके
jyotirupakramā tu tathā hyadhīyata eke
Sūtra translation
But she begins with light; for thus some read in their text.
The 'but' has assertory force. 'Light' in the Sûtra means Brahman, in accordance with the meaning of the term as known from texts such
Madhva
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