Michigan Compiled Laws, Chapter 125. Planning, Housing and Zoning § 125.1448b

Sec. 48b. (1) If a judgment has been obtained in any other civil action for the money, or part thereof, demanded in the complaint in an action to foreclose a mortgage on real estate or a land contract held by the authority, no proceeding shall be had in the action to foreclose unless the sheriff or other proper officer has returned an execution as unsatisfied, in whole or in part, and certified that he or she can find no property of the defendant out of which to satisfy the execution except the mortgaged premises.

(2) After a complaint has been filed to foreclose a mortgage on real estate or land contract held by the authority, while it is pending, and after a judgment has been rendered upon it, no separate proceeding shall be had for the recovery of the debt secured by the mortgage, or any part of it, unless authorized by the court.