I’ve always wondered about the “5 heinous crimes” (killing your mother, killing your father, killing an arhat, shedding the blood of a Buddha, and causes a Schism in the Sangha). The traditional belief is that performing one of more of these deeds is so terrible that it will automatically lead to rebirth in hell in the next life — there is nothing one can do after to avoid this fate. However, is this a claim made by later writings, or is this belief in the EBTs themselves?
At the end of the Samaññaphala Sutta (DN 2), the Buddha said that, had King Ajatasattu not killed his father, he would have become a stream winner at that very moment. The Buddha doesn’t say that he will necessarily go to hell. Nor does he say (at least as far as I can tell from the English translation) that he cannot ever become a steam winner this lifetime, just that he couldn’t after giving the sermon. It’s the commentary that makes the claim that he is doomed to hell.
So I’m curious…what’s the earliest reference to the precise claim that committing one of the 5 grave offenses ALWAYS leads to hell?