736. Rate of interest recoverable in foreclosure or redemption.

The rule as to merger of interest in the judgment1 applies only to claims for interest made against the mortgagor personally under his covenants for payment of principal and interest2. The amount for the time being recoverable under those covenants is independent of the amount for which the mortgaged property is a security3. The security stands for the amount of the principal and the full interest, that is interest at the agreed rate, and, in taking the accounts in redemption or foreclosure