Selling Land Illegally

How did you mother acquire the land i.e., by succession or self acquired by any other mode of transfer of title / ownership in her name ?

Your brother has no right, claim, interest or title in the property owned by your mother (as stated by you) therefore he (your borther) can not sell.

There is some confusion in the facts, it would be better to consult a local prudent lawyer with relevant records for better appreciation of facts, professional advise and necessary proceeding.

The land registered in the name of the mother is her exclusive property, and one of her legal heirs can not sell any part of the property.

Release such Public notice through a local advocate (Publishing in newspapers) that property belongs to Smt........and none of their children can sell/dispose or deal with the property.

In response to your query,

As you have mentioned that the property is registered in the name of your mother therefore nobody can sell that land without her consent even if it is her legal heirs as it is her exclusive property because it is registered in her name. 

If your brother is to sell the land fraudulently you can sue him for misrepresentation of facts and documents to sell the land and you can also release a public notice in the newspaper to inform people that this particular land is owned by your mother and nobody else can make any kind of sale without her acknowledgement. 

Regards, 

Aryan Raj