Emor: Chapter 41

He who fasts on Shabbat


Rabbi Yosi asks whether someone who fasts on Shabbat creates a lack of some kind, since joy is called for on that day. Rabbi Yitzchak explains what the effect of that sorrow is, and how it can lead to forgiveness. He says that every day has special power resting on it, and talks about those who fast because of a bad dream they had; the fast must take place on the same day because no day has authority over any other day.