A property is allotted on perpetual deed. The alottee dies leaving Will. On the basis of Will the property is mutated in the name of 3 sons. Later the 3 sons apply to purchase reversionary right and after payment Conveyance Deed is executed. Undoubtedly 3 sons are absolute owners of the property after Conveyance Deed. It comes to knowledge that before the mutation of lease and after the death of the alottee they executed a Relinquishment Deed for the lease property. The Lease is specific no one shall sell, transfer or assign any part of whole of the property without permission of Lessor. No permission was taken so the 3 sons never pressed for the RD. Now after the conveyance deed is executed the 2 brothers who received the share of lease property by RD wants to sell the property on the basis of RD. What is legal status.