Date: 1 Kislev 5570
From: Rabbi Moshe Sofer
To: Rabbi David Deutsch
The responsum discusses the Gemara's question in Zevachim 7b regarding the invalidation of an offering slaughtered not for its designated purpose, and the Tosafot's difficulty with this, as well as the Prishah's attempt to reconcile it with Maimonides.
Source: Shu"t Chasam Sofer CM §204