Adhyātma-krama: Indriya–Manas–Buddhi–Ātman Hierarchy and Citta-Prasāda (आध्यात्मक्रमः)
त्रेतादौ केवला वेदा यज्ञा वर्णाश्रमास्तथा । संरोधादायुषस्त्वेते व्यस्यन्ते द्वापरे युगे
tretādau kevalā vedā yajñā varṇāśramās tathā | saṃrodhād āyuṣas tv ete vyasyante dvāpare yuge ||
Vyāsa dit : «Au commencement de l’âge Tretā, les Veda étaient seuls, dans leur forme indivise ; et il en allait de même des rites sacrificiels et de l’ordre des classes et des étapes de vie. Mais lorsque la durée de la vie humaine se trouve resserrée, tout cela est organisé et réparti dans l’âge Dvāpara.»
व्यास उवाच
As human capacities—especially lifespan—diminish across the ages, the preservation and practice of dharma adapts: what was once held as a single, integral Vedic and ritual order becomes systematized and divided in the Dvāpara-yuga to remain accessible and workable.
Vyāsa is explaining a yuga-based account of religious and social organization: in early ages the Vedas, sacrifices, and the varṇa–āśrama framework are presented as ‘whole’ or unified, but later—specifically in Dvāpara—these are arranged into divisions in response to the shortening of human life.