Study Guide Bava Kamma 63 Today's daf is sponsored by Laurence and Michelle Berkowitz in loving memory of Dr. Jesse Berkowitz on his shloshim. "A man of extreme passion for Medinat Yisrael who brought his whole family on Aliya. Thanks to Hashem for saving Yair Berkowitz and granting him the strength for his heroic efforts during the Golani battle of December 12 in Gaza and for continuing to give protection to Amitai, Yair, and Ayelet. And in honor of the engagement of our daughter Ariella to Amitai Abouzaglo." Today's daf is sponsored by Hadran Women of Long Island in honor of the birth of Hallel Rus, granddaughter of our friend and co-learner Suri Davis Stern. "May the entire family see much nachat as Hallel grows in a world of peace and learning.  תזכו לגדלה לתורה ולחופה ולמעשים טובים" From where do we derive that you pay double payment for all items that are alive and movable? If the only living beings mentioned in the verse are animals and not birds, how do we know that birds are included? If one is safeguarding another's item (for free - shomer chinam) and claims it was stolen and takes an oath, he/she is liable to pay the double payment if witnesses testify that the one safeguarding kept it. But if the one safeguarded claimed it was lost, there is no double payment. The double payment is only incurred if one took an oath - from where is this derived? The Gemara quotes two contradictory braitot to prove this and later delves into the contradictions between them regarding the subject of the verse in Shmot 22:6.