Section 69A(9) in The Transfer Of Property Act, 1882
(9)The provisions of sub-section (1) apply only if and as far as a contrary intention is not expressed in the mortgage-deed; and the provisions of sub-sections (3) to (8) inclusive may be varied or extended by the mortgage-deed; and, as so varied or extended, shall, as far as may be, operate in like manner and with all the like incidents, effects and consequences, as if such variations or extensions were contained in the said sub-sections.