EXO 30:16

16 And thou shalt take the kesef hakippurim of the Bnei Yisroel, and shalt appoint it for the Avodat Ohel Mo'ed [(Work, Service of the Tent of Appointed Meeting)]; that it may be a zikaron unto the Bnei Yisroel before Hashem, to make kapporah for your nefashot.