The nails, washing the knuckles, plucking the armpits, shaving the pubes, and "the diminishing of water," meaning cleansing oneself with water after relieving oneself. Zakariyya said: Mus'ab said: And I forgot the tenth, unless it be the rinsing of the mouth. (1)

54 — Musa ibn Isma'il and Dawud ibn Shabib narrated to us, both saying: Hammad narrated to us, from 'Ali ibn Zayd, from Salamah ibn Muhammad ibn 'Ammar ibn Yasir — Musa said: from his father, and Dawud said: from 'Ammar ibn Yasir — that the Messenger of Allah, peace and blessings be upon him, said: "Verily, from the fitrah are the rinsing of the mouth and the snuffing of water into the nose." Then he mentioned something similar, and he did not mention letting the beard grow, and he added: "circumcision," and he said: "and the sprinkling of water," and he did not mention "the diminishing of water," meaning cleansing oneself after relieving oneself. (2)

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(1) The correct ruling is that it is a saying of a Companion (mawquf), and this chain is weak due to the weakness of Mus'ab ibn Shaybah, who alone narrated it as raised to the Prophet (marfu'). The rest of its narrators are trustworthy. Muslim (261) cited it as supporting evidence, as did al-Tirmidhi (2961), al-Nasa'i in al-Kubra (9241), and Ibn Majah (293), via two paths from Zakariyya ibn Abi Za'idah, with this chain. It is also in Musnad Ahmad (25060). Al-Nasa'i also cited it in al-Mujtaba (5041) via Sulayman al-Taymi, and (5042) via Ja'far ibn Iyas Abu Bishr, both from Talq ibn Habib as his own saying. Al-Nasa'i said: The hadith of Sulayman al-Taymi and Ja'far ibn Iyas is closer to correctness than the hadith of Mus'ab ibn Shaybah, and Mus'ab is denounced in hadith. Al-Daraqutni said in al-'Ilal, 5/folio 24: The two of them are more reliable than Mus'ab ibn Shaybah and more sound in hadith. Ibn Hajar said in al-Talkhis, 1/77: It is defective. His saying "washing the knuckles" means cleaning the places that become dirty and in which filth accumulates. The origin of barajim (knuckles) is the joints that are on the backs of the fingers; its singular is burjumah.

(2) Its chain is weak; Salamah ibn Muhammad ibn 'Ammar is unknown, and only 'Ali ibn Zayd ibn Jud'an — who is weak — narrated from him. Al-Mundhiri said in Mukhtasar al-Sunan: The hadith of Salamah ibn Muhammad from his father is mursal, because his father had no companionship with the Prophet, and his hadith from his grandfather — Ibn Ma'in said: it is mursal, meaning it is disconnected between Salamah and 'Ammar.