Grading: This hadith could possibly be graded hasan. There is no harm in the narrators of this chain ("la ba'sa bihim"), except that there has been disagreement over Fa'id, the mawla of 'Ubayd Allah, regarding its chain, as will come.

Details of the narration: Ibn Wahb narrated it as it is with the author (al-Hakim) in this narration (and also al-Bukhari in al-Tarikh al-Kabir 1/411, and al-Tabari in Tahdhib al-Athar 1/509). Chain: 'Abd al-Rahman bin Abi al-Mawali, from Fa'id the mawla of 'Ubayd Allah bin 'Ali, from his master 'Ubayd Allah, from his grandmother Salma.
Technical note / Defect ('illah): In the chain of al-Bukhari's "al-Tarikh al-Kabir", Fa'id's master is not mentioned. About 'Ubayd Allah bin 'Ali, Ibn Hajar said: "layyin al-hadith" (soft, i.e. weak in hadith), and al-Dhahabi said in "al-Mizan": "suwaylih al-hadith" (fairly acceptable in hadith), there is something about him.

Details of the narration: Ibn Wahb said: 'Abd al-Rahman bin Abi al-Mawali also informed me of it from 'Abd Allah bin Hasan, who narrated the like of it from the Prophet (peace and blessings be upon him) (mursal). (al-Tarikh al-Kabir 1/411, al-Tabari 1/509).

Reference / Source: Yahya bin Hassan narrated it just like Ibn Wahb's narration (Abu Dawud 3858 and others). (Chain: from Ibn Abi al-Mawal, from Fa'id, from 'Ubayd Allah bin 'Ali bin Rafi', from his grandmother).

Corroborating chains and supporting reports: Zayd bin al-Hubab corroborated him (Ibn Majah 3502, al-Tirmidhi after 2054); he narrated it from Fa'id, from 'Ubayd Allah, from his grandmother. Text: "No wound or thorn would afflict the Prophet (peace and blessings be upon him) but that he would put henna on it."

Reference / Source: Abu Sa'id the mawla of Banu Hashim (Ahmad 45/27618) and Yahya al-Himmani (al-Tabarani, al-Kabir 24/755; Abu Nu'aym 7671) narrated it from 'Abd al-Rahman bin Abi al-Mawal.
Technical note / Defect ('illah): Both of them put "'Ali bin 'Ubayd Allah bin Abi Rafi'" in the chain in place of "'Ubayd Allah". Also, Abu Sa'id in his narration called (Salma the narrator's) "paternal aunt" instead of "grandmother". Imam al-Tirmidhi ruled: "'Ubayd Allah bin 'Ali (is the) more correct."

Corroborating chains and supporting reports: Hammad bin Khalid also corroborated the two of them (al-Tirmidhi 2054); he too said "Fa'id, from 'Ali bin 'Ubayd Allah, from his grandmother".

Grading: Imam al-Tirmidhi said: This hadith is "gharib"; we know it only as a hadith of Fa'id.

Reference / Source: Abu 'Amir 'Abd al-Malik bin 'Amr al-'Aqadi narrated it (as will come with the author at number 7646, and in Musnad Ahmad 45/27617), and Ghassan bin Malik (as will also come with the author at 8450).
Technical note / Defect ('illah): Both of these narrators narrate it with the chain "'Abd al-Rahman bin Abi al-Mawal, from Ayyub bin al-Hasan bin 'Ali bin Abi Rafi', from his grandmother Salma (the servant of the Messenger of Allah (peace and blessings be upon him))". The two of them dropped "Fa'id" from the chain and made "Ayyub" Salma's grandson (the narrator).

Note / Clarification: On the virtue of hijamah (cupping) there are narrations from several Companions; the author (al-Hakim) will mention some of them later at number (7655) and after.

Technical note / Defect ('illah): The handwritten manuscripts have (the narrator's nisbah as) "al-Dabbi"; the correction is taken from Ibn Makula's "al-Ikmal" (5/231), where he said: "As for al-Dinni (with a kasrah on the dad and a doubled nun), he is Abu Yazid al-Dinni, who narrated from Maymunah bint Sa'd, the freed slave-woman of the Prophet (peace and blessings be upon him)."