Horayot 2A

מתני׳ הורו בית דין לעבור על אחת מכל מצות האמורות בתורה, והלך היחיד ועשה שוגג על פיהם, בין שעשו ועשה עמהן, בין שעשו ועשה אחריהן, בין שלא עשו ועשה ⁠– פטור, מפני שתלה בבית דין.

Mishnah: If a court erroneously issued a ruling permitting the Jewish people to violate one of all the mitzvot that are stated in the Torah, and an individual proceeded and performed that transgression unwittingly on the basis of the court’s ruling, then whether the judges performed the transgression and he performed it with them, or whether the judges performed the transgression and he performed it after them, or whether the judges did not perform the transgression and he performed it alone, in all these cases the individual is exempt from bringing an offering. This is due to the fact that he associated his action with the ruling of the court.

הורו בית דין, וידע אחד מהן שטעו, או תלמיד והוא ראוי להוראה, והלך ועשה על פיהן ⁠– בין שעשו ועשה עמהן, בין שעשו ועשה אחריהן, בין שלא עשו ועשה ⁠– הרי זה חייב, מפני שלא תלה בבית דין. זה הכלל: התולה בעצמו חייב, והתולה בבית דין ⁠– פטור.

If the court issued a ruling and one of the judges knew that they erred, despite the fact that the majority ruled against his opinion, or if he was a student and he was qualified to issue halakhic rulings, and that judge or student proceeded and performed that transgression on the basis of its ruling, then whether the judges performed the transgression and he performed it with them, or whether the judges performed the transgression and he performed it after them, or whether the judges did not perform the transgression and he performed it alone, in all these cases, the judge or the student is liable to bring an offering. This is due to the fact that he did not associate his action with the ruling of the court. This is the principle: One who associates his action with himself is liable, and one who associates his action with the ruling of the court is exempt.