(1) ʿUmar ibn ʿAlī ibn Ḥusayn ibn ʿAlī ibn Abī Ṭālib. Ibn Abī Ḥātim lists him in al-Jarḥ wa-l-taʿdīl (6:124, no. 677) without passing judgment, and al-Bukhārī does the same in al-Tārīkh al-kabīr (6:179, no. 2097). (2) Manuscript A correctly reads “Ibn al-Ḥusayn,” whereas the printed edition and the other copies have “Ibn al-Ḥasan.” The intended narrator is ʿAlī ibn al-Ḥusayn ibn ʿAlī ibn Abī Ṭālib, Zayn al-ʿĀbidīn. Ibn Ḥajar calls him “reliable, firmly accurate, devout, jurist, eminent and well-known,” and Ibn ʿUyaynah reports from al-Zuhrī: “I have never seen a Qurashī superior to him.” He belongs to the third generation and died in 93 AH/712 CE; all six canonical compilers transmit from him. See: Taqrīb al-tahdhīb 2:35, no. 321. (3) His father was al-Ḥusayn ibn ʿAlī and his grandfather ʿAlī ibn Abī Ṭālib (may Allah be pleased with them both). (4) The (Aṭ) manuscript adds the phrase: “from the Messenger of Allah, peace and blessings be upon him and his family.” (5) Ḍiyāʾ al-Dīn Muḥammad ibn ʿAbd al-Wāḥid ibn Aḥmad ibn ʿAbd al-Raḥmān al-Saʿdī al-Maqdisī al-Ṣāliḥī (569–643 AH/1173–1245 CE), the leading ḥadīth scholar of his time. A prolific author in fiqh, ḥadīth and theology. The “Mustakhraj” to which the author alludes is probably his al-Aḥādīth al-mukhtārah, a collection of sound reports outside the two Ṣaḥīḥs, as the discussion at 2/141 below suggests. See: Ibn Rajab, Ḏayl ʿalā Ṭabaqāt al-Ḥanābilah 2:236-241. (6) In Lisān al-mīzān (2:106–107, entry 432) Ibn Ḥajar cites this ḥadīth in the biography of Jaʿfar ibn Ibrāhīm and notes three isnāds: • the route the author quotes here, from Abū Yaʿlā al-Mawṣilī, in abridged form; • a route through Ismāʿīl ibn Isḥāq al-Qāḍī in his work Faḍl al-ṣalāt ʿalā al-Nabī; • a route through Ibn Abī ʿĀṣim in the same title, who gives only the end of the wording here but the full text in the first route. A further sound supporting narration is mentioned by the author on the next page and is recorded by al-Suyūṭī in al-Jāmiʿ al-ṣaghīr: “Pray in your houses; do not turn them into graves, and do not take my grave as a festival. Send blessings and peace upon me, for your prayers reach me wherever you are”; al-Suyūṭī grades it ṣaḥīḥ (2:97). Imām Ismāʿīl ibn Isḥāq al-Qāḍī also transmits it with another isnād back to ʿAlī ibn Ḥusayn, with wording close to what the author cites here (Faḍl al-ṣalāt, no. 20, pp. 10–11). Taken together, the various chains and corroborations raise the ḥadīth to the level of ṣaḥīḥ, God willing.