Hilchot Megilah 1:13-14 (Decree not to read the Megilah on Shabbat)
9:23 pm
The Rabbis determined that one may not read the Megilah on Shabbat, lest he carry it to someone’s house in order to hear it and thereby violate Shabbat. Accordingly, if Purim falls on Shabbat, when is the Megilah read?
