The works of Ādi Śaṅkarācārya

Sanatsujātīyam

p. 310

p. 310

अजश्चरो दिवारात्रमतन्द्रितोऽहं

In plain words

Unborn, always in motion, day and night without tiring — that is what I am.

Close to the Sanskrit

Unborn, moving, day and night unwearied, I [am] —