It is narrated from Sayyiduna Arfajah bin Shurayh al-Aslami (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said (raising his hands): "Soon after me there will be many trials and disorders. So whomever you see wanting to divide the affair of the Ummah of Muhammad while they are united, kill him, whoever he may be among the people." This hadith is sahih (authentic) on the condition of the two Shaykhs (Bukhari and Muslim), but they did not record it. I have judged it to be on the condition of the two Shaykhs because Shu'bah bin al-Hajjaj, Sufyan bin Sa'id, Shayban bin Abd al-Rahman and Ma'mar bin Rashid narrated it from Ziyad bin Ilaqah; then I found that Abu Hazim al-Ashja'i, Amir al-Sha'bi, Abu Ya'fur al-Abdi and other narrators corroborated Ziyad bin Ilaqah in narrating it from Arfajah. All the narrations of this chapter are collected with me in a separate volume (juz'), so there is no further need to mention these narrations. Furthermore, Imam Muslim recorded the hadith of Abu Nadrah from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "When allegiance is given to two caliphs, kill the latter of the two." Its explanation is found in the hadith of Abd al-Rahman bin Abd Rabb al-Ka'bah from Abdullah bin Amr (may Allah be pleased with them both), which Imam Muslim recorded.