Sota 46: The Heifer Whose Neck Will Be Broken; Accompaniment as Protection

Amud (a) holds the Gemara based on the previous Mishna.  How is the heifer whose neck will be broken different from the red heifer?  The rabbis consider minute details, including words indicating when the yoke is applied and the intention of the heifer's owner.  The conversation moves toward how far a yoked heifer would have to walk to be disqualified, and what other references there are to the word eitan meaning strong.

The rabbis argue about whether the word "which" in "Which may be neither worked nor sown" (Deuteronomy 21:4)  is a reference to the past or to the future.  Then they argue about whether this sentence is a generalization followed by a detail; whether which" is an amplification.  

The rabbis speak to us about who accompanies the Elders.  In other circumstances, such accompaniment is followed by winning wars and protecting cities.  The rabbis continue to share stories about people who are accompanying each other, protecting each other from harm like Torah.  One story, about Elisha (II Kings 2:23), is discussed at greater length.