“abhabbo diṭṭhisampanno puggalo āNANTARIYAM KAMMAM KāTUM”
It means a diṭṭhisampanna person (meaning a Sotapanna) is incapable of doing an ānantariya kamma.
– That makes complete sense, because if an ānantariya kamma is done, one would be reborn in the apaya in the next birth.
– A Sotapanna will never be born in an apaya.