yajanty avidhi-pūrvakam

ye-those; api-also; anya-other; devata-demigods; bhaktah-devotees; yajante-worship; sraddhaya-anvitah-with faith; te-they; api-also; mam-Me; eva-even; kaunteya-O son of Kunti; yajanti-sacrifice; avidhi-purvakam-in a wrong way.