(1)
Where any property mortgaged to a [Land Development Bank] [Substituted for the words 'Land Mortgage Bank' by Gujarat 24 of 1964] is wholly or partially destroyed, or the security is rendered insufficient for any other reason, and the mortgagor, having been given a reasonable opportunity by the bank of providing further security enough to render the whole security sufficient, or of repaying such portion of the loan as may be determined by the bank, has failed to provide such security or to repay such portion of the loan, the whole of the loan shall be deemed to fall due at once, and the bank shall be entitled to take action against the mortgagor under Section 133 or Section 134 for the recovery thereof.
(2)
A security shall be deemed insufficient within the meaning of this section, unless the value of the mortgaged property exceeds the amount for the time being due on the mortgage by such proportion as may be specified in the rules or the bye-laws of the [Land Development Bank] [Substituted for the words 'Land Mortgage Bank' by Gujarat 24 of 1964].