(1) Sahl ibn Abi Umama—Abu Umama was Asad ibn Sahl ibn Hunayf al-Ansari, of the Aws clan. Ibn Hajar, citing Ibn Maʿin, al-ʿAjli and Ibn Hibban, rates him trustworthy (thiqa); he died in Alexandria. See: Ibn Hajar, Tahdhib al-Tahdhib 4:246–47, no. 422, “Sahl.” (2) Ms. A reads: wa-l-diyar (“and the dwellings/lands”). (3) Sunan Abi Dawud, Book of Manners, chapter “On Envy,” hadith no. 4904 (5:209–10). In some copies the report continues; the author will quote the remainder below and calls this version “the narration of al-Luʼluʼi.” (4) In Ms. J the passage from “this found in the narration of al-Luʼluʼi …” up to “… ma katabnaha ʿalayhim” (p. 297) is missing. The scribe seems to have inserted the phrase “Then he came again the next day …” into the narration of al-Luʼluʼi while omitting the narration of Ibn Dasa. (5) Al-Luʼluʼi: Muhammad ibn Ahmad ibn Umar al-Basri, Abu Ali, the last person to transmit Abu Dawud’s Sunan. See Ibn al-Athir, Lubab al-ansab 3:134, s.v. “al-Lam with Waw.” (6) Ibn Dasa: Muhammad ibn Abi Bakr ibn ʿAbd al-Razzaq ibn Dasa al-Tammar, a disciple of Abu Dawud. Together with al-Luʼluʼi he transmitted the Sunan; he died in 346 AH/957 CE. See the introduction to Sunan Abi Dawud prepared by ʿIzzat al-Dabbas 1:8; Ibn al-ʿImad, Shadharat al-dhahab 2:373. (7) The righteous caliph, Amir al-Muʼminin ʿUmar ibn ʿAbd al-ʿAziz ibn Marwan ibn al-Hakam al-Umawi al-Qurashi—often called “the fifth Rightly Guided Caliph” for his piety and justice. Born in Medina in 61 AH/681 CE, he governed the city under al-Walid ibn ʿAbd al-Malik, then served Sulayman ibn ʿAbd al-Malik, who appointed him successor in 99 AH/718 CE. He abolished injustices, appointed righteous officials, and under his brief rule security and prosperity spread. He died in 101 AH/720 CE. See Ibn Kathir, al-Bidaya wa-l-nihaya 9:192–96; al-Zirikli, al-Aʿlam 5:50.