Esther 4:15-16

Then Esther sent them back to Mordecai with this answer: Go, get together all the Jews who are present in Shushan, and go without food for me, taking no food or drink night or day for three days: and I and my women will do the same; and so I will go in to the king, which is against the law: and if death is to be my fate, then let it come.