English: “And the ra’ah and the ayyah and the dayyah” — da’ah and ra’ah, ayyah and dayyah are one; and why were two names written? So as not to give an opening to a disputant to differ.
On the daf / in context: Multiple names are listed so that no one can claim that a bird known by only one of the names is permitted.
Type of Learning
Derash on the verse (Chullin) — multiple names prevent legal dispute.
What Is Learned
The Torah lists synonymous names for the same unclean birds so that no one can claim a bird under another name is permitted.