तत्रर्ग्वेदधरः पैलः सामगो जैमिनिः कविः ।
वैशम्पायन एवैको निष्णातो यजुषामुत ॥ २१ ॥
tatrarg-veda-dharah pailah
tatra-thereupon; rg-veda-dharah-professor of the Rg Veda; pailah-the rsi named Paila; samagah-that of the Sama Veda; jaiminih-the rsi named Jaimini; kavih-highly qualified; vaisampayanah-the rsi named Vaisampayana; eva-only; ekah-alone; nisnatah-well versed; yajusam-of the Yajur-veda; uta-glorified.
After the Vedas were divided into four divisions, Paila Rsi became the professor of the Rg-veda, Jaimini the professor of the Sama-veda, and Vaisampayana alone became glorified by the Yajur-veda.
The different Vedas were entrusted to different learned scholars for development in various ways.