A man who comes under safe conduct and is killed by a Muslim

Ma'mar said that Ziyad bin Muslim said: "A man from India came to Aden under a guarantee of safety, and a man from among the Muslims killed him on account of his brother. A letter was written about this to Umar bin Abd al-Aziz, and he wrote in reply: 'Do not kill him; take blood money (diyah) from him and send it to the heirs of the slain man.' And by his order the man was imprisoned."

Yusuf bin Ya'qub said: A man from among the polytheists killed a man from among the Muslims, then he entered under a guarantee of safety, and the brother of that Muslim killed him. So Umar bin Abd al-Aziz ruled against him that he must pay blood money (diyah), laid the burden of it on his own wealth, confined him in prison, and sent the blood money to the slain man's heirs among the people of war.

Al-Hasan al-Basri said: A polytheist man performed Hajj, and when he was returning from Hajj a Muslim man met him and killed him. So the Prophet (peace and blessings be upon him) ordered that man to pay the blood money (diyah) for him to his heirs.

Abu Hurrah said it is reported from al-Hasan al-Basri, regarding people who met the enemy and asked them for five days' respite, and then a person was killed between them, that he said: "The Muslims are obliged to pay his blood money (diyah)."