Is the elder brother considered a severer of family ties for not visiting his mother at his younger brother's house, due to his refusal to enter the house and to avoid harm and slandering his honor, knowing that the mother is in her nineties and not in full control of her mental faculties?

Filial piety towards one's mother is among the most emphasized duties in religion. Her old age does not diminish the obligation of honoring her. Therefore, he should not neglect visiting her. He must also reconcile with his brother and not sever ties of kinship. If he mends their relationship, he will find no difficulty in entering her home and honoring his mother. He should also bring his children to visit their grandmother to instill in them the values of filial piety.