Guidance for lease

First mutate the revenue entries based on the will and death certificte of your grand mother and let all 5 sons of your grand mother take their share, thereafter your father can lease out the flat

Mutation does not create any right in favour of anybody it is only for the purpose of  affixation of property tax and  even though your father can lease out the property as being the successor in property .

Mutation is must to create your name as the owner in the records for fixation of property tax

Thanks a lot for your valuable guidance. If my father wants to lease the property without doing mutation.....what should be there in the agreement.?