Dear Sir,
In case of will, property gets transferred after the demise of that person. As during the lifetime of your father property does not get transferred, income will also not be transferred.
Instead of that your father can gift the property to your major son. Income generated from the property will be taxable in the hands of your son. It can't be included in the income of your HUF.
please feel free to call/ revert in case of any doubts
Thanks and Regards
Abhishek Dugar
CA CS B.Com