俱舍論疏 18.38

18.38

The Śāstra states: "If one kills an arhat... it also constitutes an anantarya offense." "Without a mind of discrimination" means that one definitely generates the intention to kill without making the discrimination: 'If this is an arhat, then I will not kill him.' The Nyāyānusāra says: "There are cases where one has no conception of an arhat regarding an arhat, nor a determinate understanding that this is not an arhat; because there is no discrimination, killing him constitutes an anantarya offense. It is not entirely identical with the case of father and mother: because they are easy to recognize, one who fails to recognize them, even if committing murder, lacks the intention to abandon gratitude. An arhat has no distinct external mark; since it is difficult to recognize that he is one, and also difficult to know that he is not, killing with an indiscriminate mind also constitutes an anantarya; this should be a lower grade. Since the object is superior, it is not completely without an anantarya offense."