Numbers 5:7; Numbers 7:36; Numbers 29:26; Numbers 33:38

7 then he shall confess his sins which he has committed, and he shall make restitution in full for his wrong and add to it one-fifth of it, and give it to him whom he has wronged.
36 On the fifth day it was Shelumiel the son of Zurishaddai, leader of the children of Simeon;
26 'Then on the fifth day: nine bulls, two rams, fourteen male lambs one year old without defect;
38 Then Aaron the priest went up to Mount Hor at the command of the LORD , and died there in the fortieth year after the sons of Israel had come from the land of Egypt, on the first day in the fifth month.