98. In the case of 3 [an anomalous mortgage] the rights and liabilities of the parties shall be determined by their contract as evidenced in the mortgage-deed, and, so far as such contract does not extend, by local usage.
Transfer of Property Act, 1882
Section 98: Rights and liabilities of parties to anomalous mortgages
Chapter IV — Of Mortgages of Immoveable Property and Charges
Source: official text of the Transfer of Property Act, 1882.