This summary is not the rule. The rule text controls.
If someone else steps into a lawsuit and claims they have a stronger legal right to money from a property sale than the person who originally won the judgment, the court can step in to protect that person's claim. This happens when property gets seized and sold to pay off a debt, but a third party says they should get paid first because their claim has priority.
In this situation, the court will order the sheriff to hold back enough money from the sale to cover what the third party is owed. This money stays set aside until the court decides who actually has the better claim to it. The judgment creditor cannot collect that portion of the sale proceeds until the court sorts out the competing claims.
This rule protects people who have a legitimate claim on property from losing out just because someone else got a judgment first and forced a sale. It makes sure there's money available to pay them if the court later agrees their claim comes first.