adharmam — irreligion;  dharmam — religion;  iti — thus;  yā — which;  manyate — thinks;  tamasā — by illusion;  āvṛtā — covered;  sarva- arthān — all things;  viparītān —  in the wrong direction;  ca — also;  buddhiḥ — intelligence;  sā — that;  pārtha —  O son of  Pṛthā;  tāmasī —  in the mode of ignorance.

That understanding which considers irreligion to be religion and religion to be irreligion, under the spell of illusion and darkness, and strives always in the wrong direction, O Partha, is in the mode of ignorance.