All praise and thanks are due to Allah, and peace and blessings be upon His Messenger.
Dr. `Abdul-Fattah `Ashoor, a professor of Qur’anic exegesis and its sciences at Al-Azhar University said,
When a family member, such as an uncle does something wrong or possesses a bad attitude towards other family members, there is nothing wrong boycotting such an uncle in order to correct this bad act. However, this boycott should be for a short period and should not lead to severing the family ties. It is totally prohibited to utterly sever ties of kinship.
In a situation whereby two or more family members are not in good terms, it is important that other family members find a way of reconciling between or among them.
Siblings from this family should shoulder their responsibility in making reconciliation and setting the affairs right between the affected members. The older one should treat his younger one in a fatherly or brotherly manner and forgive his attitude. He should attempt to regain his love and explain the reasons for his actions for peace to reign. Nothing should be taken personal as they are all fighting for the same course (uniting the family).
Let each one perform his role in order to restore kind relationship and intimate cordiality between the members of the family.