Abu Dawud said: The fortress of Alyun is in Fustat, on a mountain(1). Abu Dawud said: He is Shayban ibn Umayyah, whose kunya is Abu Hudhayfah.

38 — Ahmad ibn Muhammad ibn Hanbal narrated to us, Rawh ibn 'Ubadah narrated to us, Zakariyya ibn Ishaq narrated to us, Abu al-Zubayr narrated to us that he heard Jabir ibn 'Abd Allah say: The Messenger of Allah, peace and blessings be upon him, forbade us from wiping ourselves with a bone or animal dung(2).

39 — Haywah ibn Shurayh al-Himsi narrated to us, Ibn 'Ayyash narrated to us, from Yahya ibn Abi 'Amr al-Saybani, from 'Abd Allah ibn al-Daylami, from 'Abd Allah ibn Mas'ud, who said: A delegation of the jinn came to the Messenger of Allah, peace and blessings be upon him, and said: O Muhammad, forbid your community from cleaning themselves with a bone, dung, or charcoal, for Allah the Exalted has made provision for us in them. He said: So the Messenger of Allah, peace and blessings be upon him, forbade that(3).

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(1) In the margin of (D) is written: Alyun, with a fatha on the hamza and a sukun and damma on the second letter: the name of the city of Egypt in ancient times; the Muslims conquered it and named it Fustat.
(2) Its chain is sound. Abu al-Zubayr — he is Muhammad ibn Muslim ibn Tadrus al-Makki — explicitly stated that he narrated it orally. Muslim also recorded it (263) via the chain of Rawh ibn 'Ubadah, with this isnad. It is also in the Musnad of Ahmad (14699).
(3) Its chain is weak. Ibn 'Ayyash — he is Isma'il, and although he is truthful in his narration from the people of his own country, and this is one such narration — was alone in this wording, and he was not followed except through a weak chain. Al-Daraqutni and al-Bayhaqi deemed it weak with this wording.
Al-Bayhaqi recorded it via Abu Dawud's chain, 1/109, and al-Baghawi (180). Al-Bayhaqi said: Its chain is Syrian, not strong.
Al-Daraqutni recorded it (149) via the chain of Isma'il ibn 'Ayyash, and said: Its chain is Syrian, not established.