We had the discussion what happened with the lechem hapanim on Pessach and the answer is that it was NOT chametz. Where can I read up on this fact? There were actually only TWO instances of chametz in the Mikdash - 1.shtei ha'lechem on Shavuos and 2.challos of the korban Todah.
1 Answer
Second Rashi Pesachim 37a quoting Menachos 27a says that they were not allowed to be Chametz.
Thanks to Rabbi David Lau for this answer.
The Gemara Menachos quoted by Rashi as 27a it really Menachos 57a (last line) and has been corrected in newer Gemaros