Brahma Sūtra 1.3.37
Śaṅkara
Advaita Vedānta
Sūtra
तदभावनिर्धारणे च प्रवृत्तेः
tadabhāvanirdhāraṇe ca pravṛtteḥ
Sūtra translation
And on account of (Gautama) proceeding (to initiate Jâbâla) on the ascertainment of (his) not being that (i.e. a Sûdra).
The Sûdras are not qualified for that reason also that Gautama, having ascertained Jâbâla not to be a Sûdra from his speaking the truth,
Rāmānuja
Viśiṣṭādvaita Vedānta
Sūtra
तदभावनिर्धारणे च प्रवृत्तेः
tadabhāvanirdhāraṇe ca pravṛtteḥ
Sūtra translation
And on account of the procedure, on the ascertainment of the non-being of that.
That a Sûdra is not qualified for knowledge of Brahman appears from that fact also that as soon as Gautama has convinced himself that
Madhva
Dvaita Vedānta
Sūtra
तदभावनिर्धारणे च प्रवृत्तेः
tadabhāvanirdhāraṇe ca pravṛtteḥ
Sūtra translation
And on account of (Haridrumata’s) proceeding (first) to ascertain (that Satyakama) Idas not (d Sudra), (with a view to initiating him).
“ O, sage, I do not know this, (namely) to what family I belong.” (Ch. IV. iv. 4). From this truthful statement by Satyakama,