Verse 18

अविचारिणमज्ञानं मूढमाशापरायणम् ।निगिरन्तीह दुःखानि बका मत्स्यमिवाजलम्

In plain words

Sorrows swallow, here, the one without vicāra — ignorant, deluded, given over to hope — as herons swallow a fish out of water.