BG 18.16-18
That being so, he verily who—owing to untrained Reason—looketh on his Self, which is isolated, as the actor, he of perverted intelligence, seeth not. He who is free from the egoistic notion, whose Reason is not affected, though he slay these peoples, he slayeth not, nor is bound. Knowledge, the knowable and the knower, the threefold impulse to action; the organ, the action, the actor, the threefold constituents of action.