Land purchased from government under rehabilitation

, My father had purchase 14 acers land in varvala village near dwarka, gujarat and had been doing farming there then he sold that land and purchased a small piece of land in dhinaki village in my mother's name, now we as mother is no more we have asked the revenue authorities to transfer the same in my fathers name. But the revenue dept is now asking us for proof of being a 'Farmer' which we are not having. The land has been purchased under auction by govt of rehabilitated person Request your guidance