The works of Ādi Śaṅkarācārya

Chāndogyopaniṣadbhāṣyam

Verse 96

अजा हिंकारोऽवय प्रस्तावो गावउद्गीथोऽश्वा प्रतिहार पुरुषो निधनमेतारेवत्य पशुषु प्रोता. ॥ १ ॥

In plain words

The goat is the hiṅkāra, the sheep is the prastāva, cows are the udgītha, horses are the pratihāra, and a person is the nidhana. These revatī verses are woven into animals.

Close to the Sanskrit

The goat is the hiṅkāra, sheep is the prastāva, cows are the udgītha, horses are the pratihāra, person is the nidhana; these revatī verses are woven in animals.