When remedy confined to mortgaged property.

When there is no express agreement in the mortgage nor any separate instrument given for the payment of the sum secured thereby, the remedy of the mortgagee shall be confined to the property mortgaged.[Code 1881 s 610; 1877 p 127 s 615; 1869 p 146 s 564; 1854 p 207 s 409; RRS s 1117.]