Of Mules and Mussar
Daf Yomi learners have become very familiar with the Rashbam. His commentary replaced Rashi’s for most of Bava Basra. At the end of Eruvin, the Mordechai (528) recounts an interesting incident involving the Rashbam.
Kilayim
The kilayim prohibition of working or riding behind different animal species yoked together, and whether a mixed wagon team is a Torah or rabbinic concern.
Daf Yomi learners have become very familiar with the Rashbam. His commentary replaced Rashi’s for most of Bava Basra. At the end of Eruvin, the Mordechai (528) recounts an interesting incident involving the Rashbam.