(2) the owner acquired the multiple dwelling by sale pursuant to foreclosure of a mortgage or pursuant to a deed in lieu of foreclosure of a mortgage; provided, however, that such conveyance was a bona fide transaction for the purpose of enforcing the debt and not intended to evade the provisions of this section and either (i) a certification of no harassment or waiver thereof was granted with respect to such multiple dwelling within a sixty day period prior to the date of the recording of such mortgage and no suspension or rescission thereof was recorded prior to such date; or (ii) such mortgage was recorded prior to May fifth, nineteen hundred eighty-three, or, if such owner is a banking organization as defined in section two of the banking law, a national banking association, a federal savings and loan association, the mortgage facilities corporation, savings banks life insurance fund, the savings banks retirement system, an authorized insurer as defined in section four of the insurance law, or a trust company or other corporation organized under the laws of this state all the capital stock of which is owned by at least twenty savings banks or by at least twenty savings and loan associations or a subsidiary corporation all of the capital stock of which is owned by such trust company or other corporation, a commitment for such mortgage was made prior to May fifth, nineteen hundred eighty-three.