Shiva Purana
पंचालो बह्वृचस्त्वासीदाचार्यत्वं चकार ह॥ द्विवेदः पुंडरीकश्च छंदोगोऽध्वर्युरेव च ॥ ११॥
Pañcāla was conversant with many Ṛk mantras. He became a preceptor. Puṇḍarīka became the master of two Vedas. He was a Chandoga (master of prosody) and an Adhvaryu (priest of sacrifice).
english translation
paMcAlo bahvRcastvAsIdAcAryatvaM cakAra ha॥ dvivedaH puMDarIkazca chaMdogo'dhvaryureva ca ॥ 11॥
hk transliteration by Sanscript