Part 15 · Chapter 220

Therefore, in the future, all the festivals will be annulled except the Megillah of Esther. And the reason is that never was there such a great miracle — not on Sabbaths and not on festivals — that this illumination should endure even after the departure of the Mochin from the female, except in the days of Purim alone. And in this aspect, Purim has great superiority over all the other days, even over Sabbaths and festivals.