We know that if a man has relations with a non-Jewess, the halacha is
- A zealot may kill him in the act (Sanhedrin 82a).
- Both R' Schneersohn (the last one -- in Sichos) and R' Tzadok haCohen miLublin (in Takanas Shavim) seem to imply there is a penalty of kares on the act.
If a Jewish woman has (consensual) relations with a gentile man, do either of these punishments apply? The difference seems to be that the child born of this latter connection is Jewish, while in the former case it is not.
(It would appear from R' Schneersohn's piece that it does make a difference, but I could not understand if it means the first, the second, or both punishments do not apply.)