Succession certificate

Obtain the death certificate of your late father and the legal heir certificate from the authorities concerned.  As your father did not nominate any person, your mother, brother and you shall give a notarised affidavit enclosing the copy of the death certificate of your father and the legal heir certificate and request the bank authorities to pay the amount to one of you.  You, your mother and brother have an equal share in the immovable assets.

but even for legal heir certificate my brother is denying to sign 

Presuming tyou are Hindu by religion, you are entitled to an equal share in all the estates and assets left behind by your deceased  father at par with other legal heirs. 

You can apply for legal heirship certificate however all the other legal heirs also have to sign the applicaiton to be submitted to the revenue department to issue the legal heirship certificate.

If they don't cooperate and the revenue department refuses to issue the certificate in the absence of the joint applicaiton you can file a suit for declare you as one of the legal heirs and  mandatory injunction against the Tehsildar to direct him to issue the legal heirship certificate, the other legal heirs can be impleaded as defendants since they are not cooperating with you for this purpose. 

Very well analysed, explained, opined and advised by learned senior experts, which I endorse and appreciate their accumen.

Obtain legal heir / surviving member certificate from revenue authorities and file a petition under the provisions of Indian Succession Act, 1925 for an equal share (if you are a Hindu) in the bank balance left behind by your deceased father.

Seek professional services of a local prudent lawyer for proper guidance and necessary proceedings.

Have you approached the Bank? What is their suggestion?

Moreover, the facts posted suggest deeper issues. Please post complete facts.

You have to file a case...and definitely u will get it share if there is no any will

Contact us 9816374011...

I really want to thank all the respectful and senior advocates for all the replies they have shown ,

i am thank ful , yes sir i have approached the bank , bank authorities have mentioned that we come to a agreement and sign else they amount will stay like that only in the bank 

hence i want to put it to court  or file a petition in court ,

You are welcome for your appreciations.