My elder brother is harrshing my mother fater and elder sisters and my wife by using bad words

My elder brother is asking for his share in property but due to some reason my father(senior citizen) is not able to do this at present. (All property is in mame of my father and is not an ancestral property) But inspite instead of this my father gave 5 lakh to my elder brother during lock down phase to start new buisness but after spending all these he is again demanding more money and on not aggreeing for it and when other family member tried explaining him that he is doing wrong and also as he is adult he have to think how to earn, he is not aggreeing and insulting every member of family and threatening that he will defame all family by involving in any false case also he will get involved with his inlaws and will sale the property to any powerfull man.... He has also stopped giving any maintainance to our father mother since 9 months. I have audio recording of all his conversation over phone call. How can we stop him from doing these harm....as my father is senior citizen in advance stage and also blind i am very apprehensive that what if he files any false case.....please guide