The works of Ādi Śaṅkarācārya

Bṛhadāraṇyakopaniṣadbhāṣyam

Verse 11

ते होचुः क नु सोऽभूद्यो न इत्थमस-क्तेत्ययमास्येऽन्तरिति सोऽयास्य आङ्गि-रसोऽङ्गानां हि रसः ॥ ८ ॥

In plain words

They said, 'Where has he gone, who thus remained unattached to us?' 'He is right here within the mouth.' He is Ayāsya Āṅgirasa, because he is the vital essence of all the limbs.

Close to the Sanskrit

They said: 'Where now has he gone, who thus remained unattached to us?' 'This one is within the mouth.' He is Ayāsya Āṅgirasa, because he is the essence of the limbs.