S. 56: Income from other sources – Redevelopment – Alternate permanent accommodation received by tenant – Mere execution and registration of redevelopment agreement, without completion of project and delivery of possession, does not amount to “receipt” of immovable property – Allotment of alternate premises in lieu of surrender of tenancy rights is for valuable consideration and cannot be taxed under section 56(2)(x). [ S. 2(47), 45, 56(2)(x ) ]