Esther 9:31-32

Young's Literal Translation

³¹ to establish these days of Purim, in their seasons, as Mordecai the Jew hath established on them, and Esther the queen, and as they had established on themselves, and on their seed -- matters of the fastings, and of their cry.

³² And a saying of Esther hath established these matters of Purim, and it is written in the Book.