The sacred anointing oil must not be used to anoint whom?

Answer: An ordinary man

The oil anointed the tabernacle furnishings, Aaron and his sons, but it must not be used on an ordinary man or copied.

“It must not be used to anoint an ordinary man, and you must not make anything like it with the same formula. It is holy, and it must be holy to you.”— Exodus 30:32 (BSB)