वेदान्त पारिजात सौरभ (भगवद् निम्बार्काचार्य - द्वैताद्वैत वेदान्त ब्रह्मसूत्र भाष्य सटीक)

580 VEDĀNTA-PĀRIJĀTA-SAURABHA [SŪ. 3. 3. 3.
ADH. 1.]
SŪTRA 3
"BECAUSE (THE HEAD-RITE IS A SUBSIDIARY PART) OF THE STUDY
OF THE VEDA (AND NOT OF VIDYĀ), (IT) BEING SO (THERE IS) THAT
RESTRICTION, (BECAUSE IT IS MENTIONED TO BE SO) IN THE
SAMĀCĀRA, AND BECAUSE OF THE TOPIC, AND AS IN THE CASE OF
LIBATIONS."
Vedānta-pārijāta-saurabha
And that head-rite too, which is mentioned in the text of the
followers of the Atharva-veda thus: "Let one declare this knowledge
of Brahman to them alone by whom, however, the head-rite has been
performed according to rules" (Muṇḍ 3 2.10 ¹), does not prove that
the vidyās are different, since the head-rite is enjoined as a subsidiary
part of the study of the Veda. It being a subsidiary part of the
Vedic study, is not performed by any one other than a follower of the
Atharva-veda, and hence there is "that restriction".² Since in the
book called "Samācāra" too they record the head-rite as a Vedic rite,
and since there is a text: "One who had practised the vow does not
read this" (Muṇḍ. 3.2.11 ³), that restriction is indeed appropriate,
as it is in the case of oblations, beginning with the Sauryya
Vedānta-kaustubha
If the rite of carrying a pot of burning charcoals on the head,
taught as a sacred duty in the text of the followers of the Atharva-
veda thus: "Let one declare the knowledge of Brahman to them alone
by whom, however, the head-rite has been performed according to
rules" (Muṇḍ. 3.2 10), were a subsidiary part of the vidyā, then
only we could have said that the vidyās are different. But as it
is not a subordinate part of vidyā, we cannot do so.⁴ The word
"because" states the reason, i.e. because the sacred duty called 'head-
rite' is a subsidiary part "of the study of the Veda" alone, and
not of the vidyā stated in it. "(It) being so," i.e. the head-rite
being a subsidiary part of the study of the Veda, there is "that
restriction", i.e. the restriction with regard to the teaching of
¹ Ś, R, Śk.
² Viz. that only those who have performed the head-rite are entitled to the
knowledge of Brahman.
³ Ś, R, Bh, Śk.
⁴ This answers the prima facie view mentioned above under V.K. 3.3.1.