within the chapter on the Delegations, saying:

“Mention of the Prophet ﷺ sending Khalid ibn al-Walid, in the month of Rabiʿ al-Awwal of the tenth year, to the Banu al-Harith ibn Kaʿb. He relates it with his own chain of transmission: Muhammad ibn ʿUmar informed us; Ibrahim ibn Musa al-Makhzumi narrated to me, from ʿAbd Allah ibn ʿIkrimah ibn ʿAbd al-Rahman ibn al-Harith, from his father.

He then records the arrival of the Christians of Najran on the authority of ʿAli ibn Muhammad, saying:

‘ʿAli ibn Muhammad—al-Madaʾini—informed us, from Abu Maʿshar, from Yazid ibn…’