Is a person eligible for share on brother's self acquired property ?

In one family 2brothees and parents are there. Father has not have any assets. Elder boy age is 28.younger guy has 22age. Elder one left parents 5years back and he went to Bangalore. He worked there and he studied with that money. In those 3 years he came to parents house 2times.Then he went to Abroad and he earned 25 lakhs in 2years .he is a software .he purchased site for 20 lakh. Then he married recently. The question is Younger one asking share on this site. Does younger is eligible? Younger one is saying whatever assets purchased by elder one before his (elder)marriage younger one also has right on those assets. Younger one doesn't given single rupee for the purchase of site. Site is registered in the name of elder one. Elder one telling I went Abroad. I earned money there. With that money I have purchased site. It's my hard work and effort.How younger one is eligible??? Which law telling that?? Parents doesn't given any money also for site purchase.