Yeah, there's actually an explicit example in the talmud. https://www.sefaria.org/Sanhedrin.75a.2?lang=bi&with=all&lang2=en https://www.sefaria.org/Sanhedrin.7

Yeah, there's actually an explicit example in the talmud. https://www.sefaria.org/Sanhedrin.75a.2?lang=bi&with=all&lang2=en https://www.sefaria.org/Sanhedrin.75a.2?lang=bi&with=all&lan... definitely prohibited EDIT: actually this gemara is an example of saving ones own life, so maybe not