Or HaChaim on Deuteronomy 22:22/אור החיים על דברים כ״ב:כ״ב

1 כי ימצא איש שוכב עם אשה בעלת בעל, "If a man be found having intercourse with a woman married to someone else, etc." This verse is best understood with reference to Sanhedrin 59 that if a Gentile engages in Torah study he is guilty of the death penalty. The Torah is already betrothed to her husband the Israelite, she is his bride. ומתו גם שניהם, "Both of them shall die etc." both the Gentile studying the Torah and the "Torah" itself. This means that such "Torah" instead of spreading its spiritual light will darken the horizon of the Gentile who studies it. It will not be perceived as possessing life-giving powers as when it is studied by an Israelite. Torah, which according to Proverbs 4,22 is a source of life to those who encounter it, will not prove to be a source of life to pagans who study it but the reverse.