Question :
                                            
                                            
                                            
                                                Is it permissible for a person to sever ties with his sister because her husband had quit prayer and done him harm?
                                            
                                            
                                            The Answer : 
                                            
                                                A sister is a blood-relative and maintaining blood-relations is obligatory in Islam. As regards her husband, he should be invited to the way of Allah with wisdom and beautiful preaching.