(2)Notwithstanding that any immoveable property vest in taluka panchayat, no lease, sale or other transfer thereof shall be valid unless it has been made with the previous sanction of the competent authority:Provided that in the case of a lease of immoveable property other than the property referred to in clause (b) of sub-section (1), on such previous sanction shall be necessary if the period of lease does not exceed three years.