"Beror-Hail (Midrash Koheleth vii, 7), the place to which Rabbi Johanan retired when the younger Gamaliel took charge of the school at Jamnia. It appears to have been in the Philistine plain,, and is perhaps represented by the modern village Bureir south-east of Ascalon."
I have looked through both Kohelet Rabbah and Zuta 7:7 a number of times, including in the new Kipperwasser edition and have been unable to find any mention of Bror Chayil1. Does anyone have any idea what he's referring to?
1 Although Rabban Yochanan ben Zakkai might have been mentioned there originally, according to Kipperwasser, though via scribal error, his name was probably dropped at some point.