Need suggestion

Obtain surviving member certificate (SMC) from your area Tehsildar / SDM, apply to the acquisition officer with death certificate of your father and SMC for release of compensation in equal share.

It is advisable to consult and engage a local prudent lawyer for professional guidance and necessary proceeding.

with the support of all records better to consult local lawyer and act accordingly

Through a competent advocate, get all those documents like gift deed, Municipality records, and CCTV footages on the date of registration, etc., and your advocate may advise you to file a declaration suit praying for cancellation of the gift deed and for share. But take care of the limitation period, as the date when you have learned of the fraudulent gift deed, mutation records decides limitation period.  Supreme court judgments are confusing.  One judgment says if the deed is void, one can seek partition ignoring the fraudulent deed.  Another Judgment says the fraud is not written on the forehead of the sale deed and unless a court declares even the fraudulent deed is treated as the valid deed.   Hence your advocate will decide the issue to be challenged through a partition.

Thank you for the prompt sir,

The gift deed has been registered by younger brother, still the property is on my father name, the letter has been issued by GHMC person to collect the money from them by showing father death certificate and other documents, how to tell the officer that its a fraud gift deed.

At the time of gift deed the witnesses are blood relation parental uncle and other relative, is it valid.

In this pandemic covid situation, how to request the government authority to stop issuing road winding cheque.

Apply to concerned authorities for stay in disbursement of amount to your brother.

File a suit for declaration, cancellation of gift deed, partition, permanent injunction and mesne profits.

Lodge a police complaint against your brother for committing cheating and fraud.

Again I would advise you to consult and engage a local prudent lawyer for proper appreciation of facts/ documents, professional advise and necessary proceeding.

Have clarity in your query.  What made you assume that the gift deed is the fundamental fact decides the further course of action.  Ignore mutation as the property is still in the name of your father.  Further mutation neither gets a title nor removes a title and at the most, it is a confirmation of possession.  If the property is not divided by metes and bounds, the co-sharers possession is for himself and as trustee for all other legal heirs  There is no use in prolonging a post with confusing queries.  Focus on a remedy for the issue.

Ignore the aspect of gift deed. File a partition suit setting out the pleading that the property left intestate jointly vested with you and your brother (and other legal heirs, if any). It is for your brother to plead and prove the gift deed, if any. 

1. If the transfer of 800 square yard property was done by executing a registered gift deed, then it was within the knowledge of your father, how can you say that your brother forged your deceased father's signature?

Do you have any substantial evidence to establish your allegations?

Actually besides forgery, your brother should have impersonated your father in the registrar's office as well by producing somebody in the name of your father if the gift deed was  done by a registered document.

However if the gift was done on an unregistered document then it is not valid in the eyes of law, hence you can very well challenge the same and issue a notice to the Municipal authorities to cancel the entries that were created by your brother over this portion of property on his name by fraudulent means using fabricated documents  and also issue a notice to the land acquisition authority to stop the issue of cheque since this property is under dispute and he is not the absolute owner of the property. 

You can issue this notice through a lawyer. 

2. Yes you can issue a notice as suggested above.

3. What drama you mean?

What is that he is trying to play  a drama with the property?

4.  You may have to approach court of law with a suit for partition with an application for injunction against your brother restraining him from alienating or encumbering the property in any manner till the disposal of the main suit for partition.

If your brother is reluctant and not cooperating then you cannot resolve the issue by any amicable method.