(3) where such lease provides that a rent increase shall be in the amount, if any, authorized by the DHCR in the event an application is filed to establish a hardship pursuant to section 2522.4(b) or (c) of this Part; and
(4) in the case of a vacancy lease, where an application for a rent adjustment pursuant to section 2522.4(a)(2), (b) or (c) of this Part is pending before the DHCR, such lease also recites that such application is pending before the DHCR and the basis for the adjustment, and that the increase which is the subject of such application, if granted, may be effective during the term of the lease.
(e) Escalator clauses.
(1) Regardless of whether an escalator clause was contained in the last effective lease or other rental agreement prior to April 1, 1984, no renewal lease or vacancy lease commencing on or after April 1, 1984 shall provide for any escalator clause, except that nothing herein shall prohibit the use of escalator clauses otherwise required by any other statute or regulation affecting the housing accommodation.