Heter Ochel Nefesh and the Fundamental Distinction between Shabbos and Yom Tov - Feb 3, 2025 - In a shiur delivered to North Shore Hebrew Academy juniors and seniors, Rav Rosensweig spoke about how the היתר אוכל נפש applying to יום טוב and not שבת highlights a fundamental distinction between the nature of the איסור מלאכה of both שבת ויו"ט.