Exchanging an Animal Designated for Sacrifice for Another

"He shall not exchange it or transfer it"Leviticus 27:10.

It is forbidden to exchange an animal designated for sacrifice for another animal; i.e., to attempt to transfer the holiness from one animal to another.

The Sanctity of an "Exchanged" Animal

"Both it and its substitute shall be holy"Leviticus 27:10.

In the event that someone exchanges an animal designated for sacrifice with another animal – i.e., he attempts to transfer the holiness from one animal to another – the animal upon which holiness was transferred becomes holy, [also] designated for sacrifice.