Regarding Family property and aged mother.

Sir, We are total 6 children for our parents, of which 4 are girls and 2 boys. My elder brother and me live in ancestral property, as two seperate homes in the same compound. Our mother lives with me (the younger brother) since I have built a new home in the place of our old ancestral home. Partition talks are happening in the family and we are planning to divide the total property equally between the two brothers and all sisters be settled in cash. This was on the basis that, the responsibilty and expenses of our mother will be shared equally between the two brothers. Since our mother wishes to stay in our ancestral home, where I stay, I said my elder brother that, she can stay here and we shall look after all her minor expenses like food and medicine and whenever a higher expense like hospital bills or things of that kind arrives, the money be shared between the two brothers. Further I asked him, at times when my family is not able to take care of my mother, for instance, if my family is away from home, may be for any reasons like hospital cases, any functions etc., please do take care of her by letting her stay at his house for that particular period. But he says that, whatever the reason maybe, he can let her stay not more than a week. This was not acceptable for me, since, who can predict our future? I am an aged person myself, and if I am hospitalised , my wife will have to stay with me to look after me, at that time if my elder brother , after 1 week, as he says, sent our mother out of his house, then who will look after her? Also, when my family is away from home and anything was to happen to our mother, due to his negligence and attitude, who should be held responsible?? This has led to a dispute and the family members are unable to solve this due to this "no compromise" attitude of my elder brother. Kindly advice on this, keeping our mothers safety as primary importance,since I am ready to compromise on property and not on my mother. Thank you for your time.