(1) “And Alī ibn Zayd” is omitted from N and M. (2) A and B read: “and Alī ibn al-Hasan.” The person intended is most likely Alī ibn al-Husayn ibn Alī ibn Abī Tālib, known as Zayn al-Ābidīn. He was born in 38 AH and died in 94 AH, and was one of the leading Successors. For his biography, see *Wafayāt al-Ayān*, 2/429; *Tabaqāt Ibn Sad*, 5/211–222; and al-Ziriklī, *al-Alām*, 5/86. (3) N and M read: “al-Qāsim ibn Muhammad.” He was al-Qāsim ibn Muhammad ibn Abī Bakr al-Siddīq, one of the leading Successors and one of the Seven Jurists of Medina. He was born in 37 AH. The year of his death is disputed; one view places it in 107 AH. See his biography in *Wafayāt al-Ayān*, 3/224; *Tabaqāt Ibn Sad*, 5/187–194; *al-Jarh wa-al-Tadīl*, vol. [0–9], pt. [0–9], p. 118; al-Safadī, *Nukat al-Himyān*, p. [0–9]30; and al-Ziriklī, *al-Alām*, 6/15. (4) A and B read “al-Hakam ibn Utba,” while N and M read “al-Hakam ibn Uyayna.” The correct reading is the one I have adopted. He was mentioned several pages earlier (p. [0–9]0). He died in Kufa in 115 AH. Ibn Idrīs said: “Al-Hakam ibn Utayba was trustworthy, a jurist, learned, eminent, and a prolific hadith transmitter.” See his biography in *Tabaqāt Ibn Sad*, 6/331–332; *al-Jarh wa-al-Tadīl*, vol. [0–9], pt. [0–9], pp. [0–9]23–125; and al-Khazrajī, *al-Khulāsa*, p. [0–9]6. Ibn Hajar (*Lisān al-Mīzān*, 2/336) identifies him as al-Hakam ibn Utayba ibn al-Nahhās and rejects the claim of Ibn Abī Hātim and Ibn al-Jawzī that he was a different person from the well-known imam. (5) N and M read *adadahu* (“his number”). (6) The word *mithla* (“such as”) is omitted from A and B.