The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Verse 66

अथात शौव उद्गीथस्तद्ध बको दा-ल्भ्यो ग्लावो वा मैत्रेय स्वाध्यायमुद्व-व्राज ॥ १ ॥

In plain words

Now follows the story of the canine udgītha. Baka, the descendant of Dalbha—also known as Glava Maitreya—had gone forth into a quiet place for the recitation of the Veda.

Close to the Sanskrit

Now therefore the canine udgītha. That indeed Baka, the descendant of Dalbha—or Glava Maitreya—went forth for Veda-study.