Right to foreclosure and sale can be exercised:

Section 67. Right to foreclosure or sale. In the absence of a contract to the contrary, the mortgagee has, at any time after the mortgage-money has become [due] to him, and before a decree has been made for the redemption of the mortgaged property, or the mortgage-money has been paid or deposited as hereinafter provided, a right to obtain from the Court [a decree] that the mortgagor shall be absolutely debarred of his right to redeem the property, or [a decree] that the property be sold.