From: Rabbi Moshe Sofer
To: Unknown recipient
The Chasam Sofer shares transcribed chiddushim on the final chapter of Avodah Zarah addressing tevilas keilim, kashering vessels from non-Jews, and the status of collateral. He argues that the Rambam omits the case of da'atei l'shakuei because non-Jewish asmachta does not effect acquisition, explains the quasi-ownership basis for using a non-Jew's collateral, and resolves disputes regarding hag'alah, libun, and whether knives require tevilah.
Source: Shu"t Chasam Sofer YD §114