Numbers 5:26

5:26 Then the priest will take a handful of the grain offering as its memorial portion, burn it on the altar, and afterward make the woman drink the water.

Numbers 17:10

The Memorial

17:10 The Lord said to Moses, “Bring Aaron’s staff back before the testimony to be preserved for a sign to the rebels, so that you may bring their murmurings to an end before me, that they will not die.”