Yazid bin Qatadah narrates that his father passed away, who was a Christian, while Yazid was a Muslim and he also had a Christian brother. So, Hazrat Umar did not make him (Yazid) an heir. Then Yazid's mother passed away, who was a Muslim, and after her death, his brother embraced Islam and demanded inheritance. The matter was taken to Hazrat Uthman, who inquired about it and then made him an heir.