Verse 21

किमुपादेयमस्तीह यत्नात्संसाधयाम्यहम् ।कस्मिन्वस्तुनि बध्नामि धृतिं नाशविवर्जिते

In plain words

What is there here worth striving after, that I should labor to accomplish it? On what thing free from destruction should I fasten my resolve?