Technical note / Defect ('illah): In manuscript (B) it appears as "'Abd Allah bin Abi Usamah" (with the addition of the word "Abi"). Both forms of his name are reported. Abu al-'Abbas al-Asamm and Ibn al-A'rabi used to call him "'Abd Allah bin Usamah" (without "Abi"), as it appears in the chains, and likewise al-Khalili (al-Irshad 2/ 480) wrote his biography. Whereas other scholars (and they are the majority) used to call him "'Abd Allah bin Abi Usamah". He is 'Abd Allah bin Muhammad bin Buhlul bin Abi Usamah (or Ibn Usamah) al-Halabi. Ibn 'Asakir (Tarikh Dimashq 32/ 168) also gave his biography.

Grading: Its chain up to al-Zuhri is "jayyid" (good).
Technical note / Defect ('illah): Hajjaj bin Abi Mani': he is Hajjaj bin Yusuf bin Abi Mani'. Abu Mani' is the kunyah of his grandfather, whose name was 'Ubayd Allah bin Abi Ziyad al-Rusafi, and Hajjaj is often attributed to his grandfather.

Reference / Source: Al-Bayhaqi recorded it in "al-Sunan al-Kubra" 6/ 369 from Abu 'Abd Allah al-Hakim with this same chain.

Reference / Source: Al-Dulabi recorded it in "al-Kuna" (34) from Abu Usamah 'Abd Allah bin Muhammad bin Abi Usamah al-Halabi with this same chain.
Technical note / Defect ('illah): But he said: "The name of Abu Bakr al-Siddiq is 'Atiq bin Abi Quhafah bin 'Amir…" Thus he gave his name as 'Atiq, whereas this is his title, and his (actual) name is "'Abd Allah", as reported by his grandson 'Abd Allah bin al-Zubayr (may Allah be pleased with them both) (recorded by Ibn Hibban 6864). See also what will come (at no. 6465).

Reference / Source: Ibn Mandah recorded it in "Fath al-Bab fi al-Kuna wa al-Alqab" p. 107 via Ahmad bin Sulayman bin Hadhlam > Abu Usamah 'Abd Allah bin Abi Usamah al-Halabi with this same chain, and said: "Abu Bakr bin Abi Quhafah, he is Ibn 'Amir… and the name of Abu Bakr is 'Atiq and the name of Abu Quhafah is 'Uthman."
Note / Clarification: In this narration too it came that Abu Bakr's name is 'Atiq, whereas 'Atiq is his title, as has passed.

Reference / Source: Ya'qub bin Sufyan recorded it in "al-Ma'rifah wa al-Tarikh" 11/ 238, and via him Ibn 'Asakir 30/ 22, from al-Hajjaj bin Abi Mani', and said: "The name of Abu Bakr is 'Atiq bin Abi Quhafah, and the name of Abu Quhafah is 'Uthman bin 'Amir…"
Important point: Ya'qub bin Sufyan, after setting out his lineage, said: "And 'Atiq is his title, while his name is 'Abd Allah." Then he mentioned the words of 'Abd Allah bin al-Zubayr, which will come (at no. 6465).