Without a will between two brothers

Our Father is the registered downer of the property. We are two brothers(both maried along with 2 kids) in the family. During his expiry he didnot mention any will between the two. In the running years before my fathers death i incured overall expenses in the property along with my father. (gmda house tax etc etc.). Since my other brother is not financially soundble and weak. Since after death of my father he has not mention any writting will but annouced meh infront of all that plzz take care of your brother since he is not financially strong. And in the running years we all members of the family decided to build the house in that property and i had incured all my hard earned income of my job and decided to pay the expense of building the house. In the running days my brother started to fight for his Part demanding his own building Nd want this floor nd that.. I had used all my hard earned money for rebuilding the house and he is demanding his own without paying any amount not a single paise. So plzz provide meh a legal answer how to deal with it and any procudure what to do? Regarding that.