Buddhism as Iranian heresy?

[Valerie J Roebuck]

At 9:51 pm -0500 5/11/02, Michael Witzel wrote:
>...the idea of
>weighing one's guilt, first found in the Upanishads, (first Egyptian, then
>Zoroastrian, Iranian);

Where does this occur in the UpaniSads?

Valerie J Roebuck
Manchester, UK