Today's daf is sponsored by Goody and Eric Weil in loving memory of the beloved Rav Dov Shabtai ben Yehoshua Leib and Ethel Greenstone after a short illness. 'He inspired so many of the women and men of his family to learn daf yomi. Many are part of the Hadran community that embraces them today and learns in his honor. Yehi Zichro Baruch!" Rabbi Elazar ruled in cases of a man who married a woman who can't have children that since he can have another wife, he is permitted to marry her, in which case, she can also be brought to drink the sotah water. Rav Nachman limits his opinion to a woman who at some point was able to have children, as an aylonit for sure cannot become a sotah. A difficulty is raised against Rav Nachman from a braita. Rav Nachman explains that there is a tannaitic debate about this based on the understanding of how to explain the verse "she shall be clean and will be able to retain seed." What are the different ways to understand this verse? The Gemara delves into many of the other cases mentioned in the braita that was quoted and explains them. The same is then done to the cases mentioned in our Mishna, such as the wife of a kohen or a eunuch. Each time the Gemara explains why it was necessary to explain the law in the braita/Mishna as it seems at first glance that it would be obvious. The Mishna excluded one who is a minor and one who is not a man from laws of kinui (one does not warn a wife about going into a room alone with them). What is "one who is not a man?" Three possibilities are raised, the first two (one who is impotent and a gentile) are rejected. The conclusion is that it means an animal as engaging in bestiality is not considered 'znut' (licentiousness).