Another virtue of the Aws and the Khazraj

It is narrated from Sayyiduna Salamah bin al-Akwa' (may Allah be pleased with him) that Amir bin al-Tufayl did not enter Madinah without a guarantee of safety from the Messenger of Allah (peace and blessings be upon him). When he came to the Prophet (peace and blessings be upon him), he (peace and blessings be upon him) said to him: "O Amir, whoever embraces Islam remains safe." He said: Yes, on the condition that the desert and Bedouin lands (al-wabar) are mine and the towns and settled lands (al-madar) are yours. He (peace and blessings be upon him) said: "That cannot be. O Amir, embrace Islam and you will be safe." Then the Prophet (peace and blessings be upon him) said: "Go, until we consider your matter tomorrow." So the Messenger of Allah (peace and blessings be upon him) sent for the Ansar and asked: "What is your opinion? I have invited this man, but he refuses to embrace Islam unless the desert is under his rule and the towns under mine." They said: Whatever Allah wills and then whatever you will, O Messenger of Allah! Whenever they took from us in war a single camel-hobbling rope ('iqal), we took two from them in return. Allah and His Messenger know best. The next day Amir came again to the Prophet (peace and blessings be upon him), and he (peace and blessings be upon him) asked him: "O Amir, will you embrace Islam?" He said: No, unless the desert is mine and the towns are yours. The Prophet (peace and blessings be upon him) said: "Is there no other way besides that?" But he insisted that the lands of tents be his and the lands of mud houses be the Prophet's (peace and blessings be upon him). So the Prophet (peace and blessings be upon him) refused to accept his condition. Amir said in anger: Know that, by Allah, I will fill Madinah against you with horsemen and foot soldiers. The Prophet (peace and blessings be upon him) said to him: "Allah Almighty will not let that happen, nor will the sons of Qaylah, that is, Aws and Khazraj." Then, when Amir turned his back and left, the Messenger of Allah (peace and blessings be upon him) supplicated: 'Allahumma ikfinihi' (O Allah, suffice me against him). So Allah Almighty afflicted him, before he reached his home, with a severe inflammation of the throat, or diphtheria (al-dhubahah). When this illness struck him, he cried out: O family of Amir! A swelling like the swelling of a camel has come out! And he perished at that very moment, before reaching his home.

It is narrated from Sayyiduna Jabir bin Abdullah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever climbs the mountain pass of al-Murar (or al-Marar), his sins will fall away from him just as the sins of the Children of Israel fell away." The first to climb it were our horses, the horses of Banu Khazraj. Then the Messenger of Allah (peace and blessings be upon him) said: "All of you have been forgiven except the owner of the red camel." The narrator says: He was a Bedouin searching for his lost animal. We said to him: Come, the Messenger of Allah (peace and blessings be upon him) will seek forgiveness for you. But he said: Finding my lost animal is dearer to me than your companion (the Prophet, peace and blessings be upon him) seeking forgiveness for me.
This hadith is sahih (authentic) on the condition of Imam Muslim.

It is narrated from the Mother of the Believers Sayyidah Aishah (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him) said: "There is no harm to a woman who stays between two neighbors from among the Ansar, or who is lodged with her parents."
This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it.