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Summary: Rabbi Hanina ben Teradyon cites Avodah Zarah 18a. Read the exact wording below with its English translation, then open the passage in our own reader.
English translation
pronounce the ineffable name of God with all of its letters, i.e., as it is spelled. The Gemara asks: And how could he do that? But didn’t we learn in the mishna ( Sanhedrin 90a): These are the people who have no share in the World-to-Come: One who says that the Torah is not from Heaven or that there is no source from the Torah for the resurrection of the dead. Abba Shaul says: Also one who pronounces the ineffable name as it is written, with all of its letters, has no share in the World-to-Come. The Gemara answers: Rabbi Ḥanina ben Teradyon did it to teach himself, as it is taught in a baraita with regard to the prohibition against sorcery: “You shall not learn to do” (Deuteronomy 18:9); this indicates: But you may learn to understand and to teach. In other words, certain prohibitions do not apply when one is acting only in order to acquire knowledge of the subject. The Gemara asks: Rat…