[Avodah] Two kinds of humros

[David Riceman]

T613K at aol.com wrote:
>  
> Citing a DE'ORAISAH as being a fence doesn't make sense.
But where did the Rabbis learn to make fences? See Biur HaGra on Avos 
1:1 s.v. "va'asu siyag laTorah", the sources he cites (ADRN ed. Shechter 
version 1 at the beginning of chapter 2, and BMR Naso 10:8), and the 
sources they cite (Aharei Mos 18:19 and 18:6 and Naso 6:3).

David Riceman