Partition

Dear Sir, This is Mohsin I stay in mumbai and we have 2 property 1in mumbai and 1 in Rajasthan both property was on my father's name and my father died in 2007 but mother is alive and we are mother, 2 brothers and 2 sister , my mom and small sister stay with me 1 big sister and 2 of us got married now the issue is that my brother who is not taking any responsibility of home and he wants half half share of both property he stay separate from last 12 years in 2006 now he harasse us abuse us when we go to rajasthan and makes many problems for us, he give 40 thousand rupees in 12 year to my mom to show people that I gave money to my mom he take possession in village home in Rajasthan when my mom take him back in 2011 he promise to take responsibility but now he deny all thing and try to posses all house he was separate from his decision but now he blame us that we force him to separate my mom is asthma patient and she don't 1 lung I do my best to take responsibility of my mom and sister so plz tell me what step i have to take for this problem.