Esther 4:3; Esther 4:16

Esther 4:3

3 And in every province, whithersoever the Devar HaMelech and his dat (decree) came, there was evel gadol (great mourning) among the Yehudim, and a tzom, and weeping, and wailing; and many lay on sackcloth and ashes.

Esther 4:16

16 Go, gather together kol HaYehudim that are found in Shushan, and declare ye a tzom for me, and neither eat nor drink shloshet yamim, lailah vayom. I also and my na’arot will undergo a tzom likewise; and so will I go in unto HaMelech, though it is not according to the dat; and if I perish, I perish.