among the people of the mosque visited ʿUmar ibn al-Ḥakam ibn Rāfiʿ al-Anṣārī, they said: O Abū Ḥafṣ, tell us, he said: I heard Jābir ibn ʿAbd Allāh with it. The point of contention is that Khālid ibn al-Ḥārith inserted between ʿAbd al-Ḥamīd and ʿUmar ibn al-Ḥakam the father of ʿAbd al-Ḥamīd, who is Jaʿfar ibn ʿAbd Allāh ibn al-Ḥakam, who is the nephew of ʿUmar ibn al-Ḥakam, while Hushaym omitted him from between them. Then Khālid named the grandfather of ʿUmar ibn al-Ḥakam as Rāfiʿ, while Hushaym named him Thawbān, and perhaps due to this difference it was said that they are one, and whether it is this or that, both are trustworthy, so it does not affect the authenticity of the ḥadīth. And perhaps the more correct narration is that of Khālid ibn al-Ḥārith, which includes the mention of Jaʿfar ibn ʿAbd Allāh ibn al-Ḥakam, for the addition of a trustworthy narrator is accepted. And Jaʿfar is also trustworthy, from the men of Muslim, so the ḥadīth is authentic in any case. Then I found a corroborator for Hushaym, who is ʿAbd Allāh ibn Ḥumrān, the trustworthy, except that he did not name the grandfather of ʿUmar ibn al-Ḥakam. It was recorded by al-Bazzār (775). And it was narrated by Abū Maʿshar from ʿAbd al-Raḥmān ibn ʿAbd Allāh al-Anṣārī who said: "Abū Bakr ibn Muḥammad ibn ʿAmr ibn Ḥazm entered upon ʿUmar ibn al-Ḥakam ibn Thawbān and said: O Abū Ḥafṣ! Tell us a ḥadīth from the Messenger of Allāh (ṣallá Allāhu ʿalayhi wa-sallam) in which there is no difference, he said: Kaʿb ibn Mālik narrated to me in a marfūʿ form with the wording: 'Whoever visits a sick person walks in mercy, and when he sits with him, he immerses in it.'" And he added: "And you have immersed, if Allāh wills, in mercy."