Verse 16

गुरुश्चेदुद्धरत्यज्ञमात्मीयात्पौरुषादृते ।उष्ट्रं दान्तं बलीवर्दं तत्कस्मान्नोद्धरत्यसौ

In plain words

If a guru delivers an ignorant man apart from that man's own pauruṣa, then why does he not deliver a tamed camel, or an ox?