Our father has passed away. How can the children of the two households mourn and manage the funeral without fighting?

Encourage the children of both households to mourn as siblings who have lost the same father, not as competing sides. In the time of mourning, put first the prompt handling of the deceased's burial and be generous of heart with one another. Avoid talk of property on the day of the funeral, because it easily sparks quarrels while emotions are still raw. The bond of sharing one father remains after he is gone, so make this moment a starting point for getting to know each other. When everyone is calmer, consult the Syariah Court or the office that handles estates for distribution according to the rules of inheritance (faraid). Give each child space to grieve in their own way. See preparing for death.