Today's daf is sponsored by Judy Schwartz "in memory of my very special mother Shirley K. Tydor (Sara Raizel bat Mordechai Yitzchak and Freidasima) on my birthday. A birthday is a time to make the world a better place: do a cheshbon nefesh (soul searching), give tzedaka, and thank one's mother for what she went through. And so I do, with love."

Today's daf is sponsored by Batsheva & Daniel Pava on the second yahrzeit of Batsheva's father, Reb Shlomo ben Yehuda Aryeh Vegh, z"l. "My father was an orphaned child survivor of Auschwitz. He lived to see 3 generations of descendants, including grandchildren and great grandchildren serving in Tzahal and Sherut Leumi. Every morning, my father would get up at 5 am and learn gemara. He would also complete the entire Sefer Tehillim each week. My Dad is, and will forever be, my hero." Today's daf is sponsored by the Shuster family in memory of Dr. Sandra Shimoff, the mother of Randi Shuster. "Her devotion to the study of Torah and Shas will always be remembered by her family and all those who knew her." Today's daf is sponsored by Rabbi Art Gould in gratitude to HaShem on the occasion of my engagement to Laini Millar Melnick. "I never thought I would be this happy again in my lifetime. I stood under the chuppa once and it worked out pretty well; I can't wait to stand under the chuppa again." Today's daf is sponsored by Debbie Pershan for the 17th yahrzeit of her mother, Tziril bat Moshe Pinchus.

Why is it forbidden to sell large cattle to a non-Jew? After deliberations, they conclude that this is a decree lest the Jew rent it out or lend it, or concern of a "test ride" that may be done as Shabbat begins. Rav Ada permitted selling through a broker because these concerns don't apply in that case.

Rav Huna sold a cow to a non-Jew and claimed that perhaps he bought it for slaughter. Rav Chisda challenged him - why don't we worry about the matters mentioned previously? After deliberation, Rav Ashi defines in what situations it is permitted/forbidden.

Rabba sold a donkey to a Jew who was suspected of selling to non-Jews. Abaye challenged him and convinced Rabba that he had made a mistake. Within Abaye's challenge, he quoted a baraita that forbids a Jew from selling weapons to a non-Jew. Rav Dimi expanded this prohibition to selling weapons to Jewish bandits/robbers.

Can one sell defensive items to non-Jews? This is a subject of debate.