Where does “အကုသလကရ်္မ္မပထ” come from?

အကုသလကရ်္မ္မပထ (Old Mon) comes from Sanskrit कर्म, from Proto-Indo-Iranian kárma, from Proto-Indo-European kʷer- — to do; to make; to build.

အကုသလကရ်္မ္မပထ (Old Mon): course of action resulting in demerit