Tirmidhi

Narrated Abdullah ibn Amr ibn al-As: The Messenger of Allah ﷺ said: Muslims are equal in respect of blood. The lowest of them is entitled to give protection on behalf of them, and the one residing far away may give protection on behalf of them. They are like one hand over against all those who are outside the community. Those who have quick mounts should return to those who have slow mounts, and those who got out along with a detachment (should return) to those who are stationed. A believer shall not be killed for an unbeliever, nor a confederate within the term of confederation with him. Ibn Ishaq did not mention retaliation and equality in respect of blood.

Abu ’Ubaidah al-Jarrah (RAA) narrated, ‘I heard the Messenger of Allah (ﷺ) say, “Muslims must respect the protection granted (to a non-Muslim) by other Muslims.” Related by Ibn Abi Shaibah and Ahmad with a weakness in its chain of narrator. At-Taialisi transmitted on the authority of 'Amro bin al-'As (RAA), ‘The right of giving protection to non-Muslims is extended to the most humble of the believers (and all Muslims must respect it and give him support).’ Al-Bukhari and Muslim transmitted on the authority of 'Ali (RAA), ‘The protection granted by one Muslim is like one given by them all, and this right is extended to the most humble of them.’ Ibn Majah narrated with a different chain of narrators, 'And the most eminent gives protection on their behalf.’ Al-Bukhari and Muslim transmitted in the hadith of Umm Hani’, “We have given protection to whom you have granted (protection).”