Technical note / Defect ('illah): In manuscript (M) this name was corrupted to "Ubayd Allah", while manuscript (S) does not mention it at all.

Note / Clarification: In the manuscripts there is a corruption (scribal error) here, to the word "Jabir".

Grading: Its chain is extremely weak and talif (unreliable).
Technical note / Defect ('illah): The narrator in the chain Sulayman bin Dawud al-Shadhakuni is accused of lying, and the condition of his teacher Isma'il bin Ubayd Allah could not be ascertained.
Note / Clarification: Uthman bin Mawhab is Uthman bin Abd Allah bin Mawhab al-Madani.

Reference / Source: Imam al-Tabarani recorded it in "al-Mu'jam al-Kabir" (7106), and through him Abu Nu'aym in "Ma'rifat al-Sahabah" (3571), via Ibrahim bin Muhammad bin al-Harith (known as Ibn Na'ilah) from Sulayman al-Shadhakuni, with this same chain.

Details of the narration: This hadith was narrated by Imam Ahmad (34/20925), Imam Muslim (360) and Ibn Hibban (1124) and (1154) through two different routes via Uthman bin Abd Allah bin Mawhab, from Ja'far bin Abi Thawr, from Jabir bin Samurah (may Allah be pleased with him), not from his father Samurah.
Important point: This is the "mahfuz" (preserved, correct) narration, and it mentions only wudu' after eating camel meat, not after drinking camel milk.

Reference / Source: Ibn Qudamah says in "al-Mughni" (1/254) that there are two reports (from Imam Ahmad) on whether drinking camel milk breaks wudu':

Grading: According to the first report, wudu' is broken.
Note / Clarification: Usayd bin Hudayr (may Allah be pleased with him) narrated that the Prophet (peace and blessings be upon him) said: "Perform wudu' after (eating) camel meat and (drinking) its milk."
Reference / Source: Imam Ahmad recorded it in "al-Musnad" (19097), and its chain is weak. In another wording, which is Imam Ahmad's own narration, the Prophet (peace and blessings be upon him) was asked about camel milk and said: "Perform wudu' from it," and he was asked about sheep milk and said: "Do not perform wudu' from it."
Reference / Source: Ibn Majah recorded it (496), and its chain is weak. A similar narration is reported mawquf from Abd Allah bin Umar (may Allah be pleased with them both) in Ibn Majah (497), whose chain is also weak.

Important point: The second report is that drinking milk does not require wudu', because the sahih hadith came only regarding meat.

General principle: Ibn Qudamah further says that regarding the parts of the camel other than its meat, such as the liver, spleen, hump, fat, broth, tripe and intestines, there are two scholarly views (wujuh):

Important point: The first view is that they do not break wudu', because the explicit text does not cover these parts.

Important point: The second view is that wudu' is broken, because all these things are also part of the "camel" as a whole.

General principle: When the word "meat" is used with reference to an animal, the whole animal is meant, because meat forms most of it. That is why, when Allah the Exalted forbade "the flesh of swine", the whole swine was meant to be forbidden; the same rule applies here.