The works of Ādi Śaṅkarācārya

Bṛhadāraṇyakopaniṣadbhāṣyam

Verse 22

प्राणो वा अङ्गानाँ रसः प्राणो हि वा अङ्गानाँ रसस्तस्माद्यस्मात्कस्माच्चाङ्गात्प्राण उत्क्रामति तदेव तच्छुष्यत्येष हि वा अङ्गानाँ रसः ॥ १९ ॥

In plain words

Prāṇa is indeed the vital essence of the bodily limbs; for prāṇa is truly the essence of all the limbs. Therefore, from whichever limb prāṇa departs, that very limb withers and dries up. For this alone is the essential sap of the limbs.

Close to the Sanskrit

Prāṇa indeed is the essence of the limbs; for prāṇa is truly the essence of the limbs. Therefore, from whichever limb prāṇa departs, that very limb dries up; for this indeed is the essence of the limbs.