Verse 30

भुक्त्वा जन्मसहस्राणि भूयः संसारसंकटे ।पतन्ति केचिदबुधाः संप्राप्यापि विवेकिताम्

In plain words

Having lived through thousands of births, some, unwise, fall back again into the peril of saṃsāra — even after having attained viveka.