Study Guide Gittin 23 Today's daf is sponsored by the Billets, Cohns and Hararis in loving memory of their dear friend Tova Rhein z"l on her yahrzeit.  How can we allow those without understanding (like a minor, deaf-mute) to write the get if it needs to be written li'shma?There are three different answers to resolve this difficulty. Who can be a messenger to bring a get? Why is a blind person not allowed to bring a get? Two rabbis who were blind, Rav Sheshet and Rav Yosef,  answer the question - each with his own answer. Can a Caananite slave be a messenger to deliver a get? Rav Ami infers from the Mishna that he can, but Rabbi Yochanan says he cannot. What is the logic behind each position? There are women who are not believed to testify that a woman's husband has died as there is a concern that they may have ulterior motives to lie so as to ruin the life of the wife (she will get remarried as a result of their testimony, then the husband will return and she will be forbidden to both husbands). These women are her mother-in-law, her husband's sister, her rival wife, her yevama (her husband's brother's wife after he died childless), and her husband's daughter (from another marriage). These women are believed to bring a get, as there is a written document to support them. However, there is a braita that says that cannot bring a get. Rav Yosef explains the contradiction by differentiating between a get written in Israel (as there is no need for any testimony so they are believed) and one written abroad (they are not believed as we need to rely on their testimony, "in front of me it was written...") and they cannot be trusted to testify. Abaye resolves the contradiction in the opposite manner, as in Israel the husband can still come and contest that the get is invalid, therefore there is concern the women are lying and the wife will get married based on the get, the husband will later contest the get, and the woman will be forbidden both to both husbands. But if it was written abroad, he cannot contest the get as it was immediately certified in court. Therefore there is no concern they will lie.