lucasgagefan on Nostr: (16) When a Jew commits a crime against a non-Jew, other Jews must work to conceal ...

(16) When a Jew commits a crime against a non-Jew, other Jews must work to conceal it. Any Jew who reports the crime is to be assassinated.

This is the Law Against Mesira (Whistleblowing)

It is found in the Talmud Bava Kamma 117a. Screenshot is from Mishneh Torah.