The works of Ādi Śaṅkarācārya

Sanatsujātīyam

p. 200

p. 200

नाधीयते तार्ण इवास्य व्याघ्रः ।

In plain words

Just like a tiger made of straw, a person lacking this knowledge is completely ineffective.

Close to the Sanskrit

Not they study, like of this a tiger made of grass.