This is a good hadith.

2311 - Qutaybah narrated to us, saying: ʿAbd al-ʿAzīz ibn Muḥammad narrated to us, from ʿAmr ibn Abī ʿAmr, from ʿAbd Allāh ibn ʿAbd al-Raḥmān al-Anṣārī al-Ashhalī, from Ḥudhayfah ibn al-Yamān, that the Messenger of Allah, peace and blessings be upon him, said: "By the One in Whose hand is my soul, the Hour will not come until you kill your leader, and you fight one another with your swords, and the worst of you inherit your worldly affairs." (1)

This is a good hadith. (2)

2312 - Naṣr ibn ʿAlī narrated to us, saying: Sufyān narrated to us, from Muḥammad ibn Sūqah, from Nāfiʿ ibn Jubayr, from Umm Salamah, from the Prophet, peace and blessings be upon him, that he mentioned the army that will be swallowed up by the earth. Umm Salamah said: "Perhaps among them are those who are compelled?" He said: "They will be resurrected according to their intentions." (3)

This is a good and ghareeb hadith from this chain. It has also been narrated...--------------------------------------------
(1) Its chain is weak; the cause is the unknown status of ʿAbd Allāh ibn ʿAbd al-Raḥmān al-Ashhalī. It was also recorded by Ibn Mājah (4043). It is in al-Musnad (23302).
(2) After this, the following appears in the printed edition: "We only know it from the hadith of ʿAmr ibn Abī ʿAmr," and it is not found in any of our manuscript sources.
(3) Its chain is authentic. It was recorded by Muslim (2882), Abū Dāwūd (4289), and Ibn Mājah (4065). It is in al-Musnad (26475) and Ṣaḥīḥ Ibn Ḥibbān (6757).