शाखान्तरात् सङ्ग्रहणम्

रविलोचन-टिप्पन्यः

Ashvalayana samhita of rg veda has sri sukta as part of samhita itself. BB chaubey has published it iirc. (आश्वलायनशाखायाः पंचममण्डलस्य अष्टाशीतितमं सूक्तं वर्तते श्रीसूक्तम्। पद्मानने पद्मिनी इत्यादिकं सूक्तं तु ८९तमं।). khila suktas are merely mantras taken from other shakhas - some of which are extant now and some may be lost. But aptas don’t doubt their vedic nature. They are treated as sruti.

Anandavalli of taittirya upanishad doesn’t form part of brahma yajna tarpanams done by taittiriyas. It is a portion which has been taken from katha shakha supposedly and added to taittiriya upanishad.

Similarly katha siksha upanishad is wholesale copy of taittiriya siksha valli into katha shakha.

Taittiriya aranyaka has kathakam which is again copied from katha shakha. Where taittiriyas incorporated these other texts directly into their main texts, a few other shakhas (like sakala) simply kept them as khila/appendix.

सूत्र-सङ्ग्रहणम्

सूत्रब्राह्मणरूपेण तयोर्विभेदात् । पञ्चमारण्यकमृषिप्रोक्तं सूत्रम् । प्रथमारण्यकं त्वपौरुषेयं ब्राह्मणम् ।

इत्युक्तं सायणाचार्यैः, तत्र आरण्यकगतपाठस्य सूत्ररूपेण एकत्रीकरणात् तस्याध्ययनमध्यापनमपि मूलग्रन्थस्य सह जातं इति मन्ये। (स्रोतः - आशुतोषः)