"His door was knocked with fingernails." It was recorded by al-Bukhārī in "al-Adab al-Mufrad" (1080) and in "al-Tārīkh" (1/1/228) and by Abū Nuʿaym in "Akhbār Aṣbahān" (2/110 and 365) from Abū Bakr ibn ʿAbd Allāh al-Aṣbahānī from Muḥammad ibn Mālik ibn al-Muntaṣir from Anas ibn Mālik as a marfūʿ ḥadīth. I say: This isnād is weak; Ibn al-Muntaṣir and Abū Bakr al-Aṣbahānī are unknown. It has a corroborating narration from the ḥadīth of Kaysān, the freed slave of Hishām ibn Ḥasan, from Muḥammad ibn Sīrīn from al-Mughīrah ibn Shuʿbah, who said: and he mentioned it. It was recorded by al-Ḥākim in "Maʿrifat ʿUlūm al-Ḥadīth" (p. 19) from Muḥammad ibn Aḥmad al-Zībqī, who narrated to us from Zakariyyā ibn Yaḥyā al-Manqarī, who narrated to us from al-Aṣmaʿī, who narrated to us from Kaysān... And this Kaysān, Ibn Abī Ḥātim said (3/2/166): "He narrated from Muḥammad ibn Sīrīn. Abū Nuʿaym and Muslim ibn Ibrāhīm narrated from him." I say: And also from him, al-Aṣmaʿī as in this narration, so he is of unknown status, thus he is according to the criteria of Ibn Ḥibbān. Perhaps he included him in "Thiqāt" and then I saw him there (7/358). As for al-Zībqī, al-Samʿānī mentioned him in this attribution, saying: "He narrated from Yaḥyā ibn Abī Ṭālib, and al-Qāḍī Abū ʿUmar ibn Athyāf al-Baṣrī narrated from him." Then I found another route for it from Anas, narrated by Ḍirār ibn Ṣurd: al-Muṭṭalib ibn Ziyād narrated to us from ʿAmr ibn Suwayd from Anas. It was recorded by al-Bazzār (2008 - Kashf al-Astār): Ḥumayd ibn al-Rabīʿ narrated to us, Ḍirār ibn Ṣurd narrated it. I say: And Ḍirār, al-Ḥāfiẓ said: "Truthful but has errors and mistakes."