Verse 17

किं तत्प्राप्यं प्रधानं स्याद्यद्विश्रान्तौ न शोच्यते ।यत्प्राप्य जन्मना भूयः संबन्धो नोपजायते

In plain words

What is that supreme thing to be attained, resting in which one grieves no more, and having attained which no further bond with birth arises again?