Verse 34

तमोरूपो हि संकल्पो नित्यं प्राकृतचेष्टया ।परां कृपणतामेत्य प्रयाति कृमिकीटताम्

In plain words

Saṅkalpa in the form of tamas, forever through base, brute activity, comes to the utmost wretchedness and passes on into the state of a worm or an insect.