Numbers 7:87-88

87All the oxen for the burnt offering were twelve bullocks, the rams twelve, the lambs of the first year twelve, with their grain offering: and the kids of the goats for sin offering twelve.

88And all the oxen for the sacrifice of the peace offerings were twenty and four bullocks, the rams sixty, the he goats sixty, the lambs of the first year sixty. This was the dedication of the altar, after that it was anointed.