Tenant not vacating the home we haven't done aggrement

Sir since we were facing financial crisis my father have given our home on rent to Mr.ghadi on heavy deposit of 5 lacs but he didn't made an agreement. Mr.ghadi allowed his brother family to stay there after almost 1.5yrs my father told mr.ghadi that we shall make an agreement but he refused because he was undergoing some medical treatment he told my father to return his 5lacs since he requires for his daughter wedding and his treatment and he will vacate our home my father got ready to sell our home to return his money we got a buyer he gave us first 4lac which we returned to Mr.ghadi now only 1lac remain.Mr.ghadi health was series in that case my father went to meet him that Mr.ghadi younger daughter was there with him he told her that uncle have only 1lac pending to return after that we should vacate his home. After that his daughter started asking my father about the money for Mr.ghadi treatment so my father immediately arrange for 50 thousand and gave her unfortunate mr.ghadi expire after some days now we have only pending 50thousand to return the girl requested my father to arrange the next pending for his last rituals after 12 ritual my father went to mr.ghadi home in presence of Mr.ghadi mother,wife,bother (who is staying in our home) and his daughter my father returned their pending amount and ask to vacate the room and they agreed and request to let Mr.ghadi bother to stay for 1month so that he can find another home for self my father agreed on mutual understanding he allowed him to stay now it's almost more than a month now the bother don't want to vacate he is asking us to more months sometime he ask to give cash so that he can rent another home we don't want to give him home to stay any more since he do some illegal work like matka and he is not a tursted man please suggest how can we vacate our home since our home buyer also waiting for that