Date: 26 Elul 5594
From: Rabbi Moshe Sofer
To: Rabbi Anshil
The responsum delves into the measurement of 'pars' (half-mile) as it relates to the time required for immersion (tevilah) and the duration of twilight (bein hashmashot), analyzing the views of Maimonides, Rashi, and Tosafot.
Source: Shu"t Chasam Sofer Collected §16