1)
Who is "Kol ha'Nivdal"?
1.
Rashi, Ibn Ezra #1, from Kidushin 70a: They are converts, who separated from the Tum'ah of Nochrim to cling to Yisrael.
2.
Ibn Ezra #2: They are Yisraelim who separated from the Tum'ah of Nochrim.
