Esther 9:31-32

Orthodox Jewish Bible

³¹ To confirm these yemei HaPurim in their times appointed, according as Mordechai HaYehudi and Ester HaMalkah had enjoined them, and as they had decreed for themselves and for their zera, the matters of the tzomot (fasts) and their ze’akah (lamentation).

³² And the decree of Ester confirmed these matters of Purim; and it was written in the sefer.