Date: 21 Sivan 5574
From: Rabbi Moshe Sofer
To: Rabbi Sinai
The responsum addresses a discrepancy in Rashi's commentaries on B'chorot 12b and Shabbat 14a regarding the penalty for eating impure terumah, and attempts to reconcile the different interpretations.
Source: Shu"t Chasam Sofer Collected §17