Numbers 17:9-10

9Moses then brought all the staffs from Adonai’s Presence to all Bnei-Yisrael. They looked and each man took his staff.

10Adonai said to Moses, “Put Aaron’s staff back in front of the Testimony to keep as a sign to the sons of rebellion, so that it may put an end to their grumblings against Me, and so they will not die.”