Ibn Hishām (1) reports—from Abū ʿUbaydah, from Abū ʿAmr al-Madanī—that this event occurred after the execution of Banū Qurayẓah, and that the man killed was Kaʿb ibn Yahudhā. When Muḥayyiṣa slew him at the Messenger of Allah’s ﷺ command on the Day of Banū Qurayẓah, his brother Ḥuwayyiṣa said to him what has been quoted earlier; Muḥayyiṣa replied with the words already cited, whereupon Ḥuwayyiṣa embraced Islam that same day. Allah knows best.

Notice:
Al-Bayhaqī—and before him al-Bukhārī—placed the report of Banū al-Naḍīr before the Battle of Uḥud. The correct order is to mention it after Uḥud, as Muḥammad ibn Isḥāq and other leading scholars of the Sīrah have done. The proof is that wine was declared unlawful during the nights of the Banū al-Naḍīr siege, whereas it is authentically recorded in al-Ṣaḥīḥ (2) that a number of those martyred at Uḥud had drunk wine that very morning. This shows that wine was still permissible at that time and was only prohibited afterwards, confirming our statement that the affair of Banū al-Naḍīr came after the Battle of Uḥud (3). Allah knows best.

Another notice:
The incident of the Jews of Banū Qaynuqāʿ occurred after the Battle of Badr, as previously mentioned; likewise, the killing of the Jew Kaʿb ibn al-Ashraf was carried out by the Aws. The affair of Banū al-Naḍīr was after Uḥud, as will be detailed; the slaying of Abū Rāfiʿ, the Jewish merchant of the Ḥijāz, was—according to the well-known account—executed by the Khazraj; and the episode of the Jews of Banū Qurayẓah came after the Day of the Confederates and the incident of the Trench, as will also be mentioned.

The Expedition of Uḥud, in Shawwāl of the third year AH

A point recorded by the author regarding the name “Uḥud”:
He said: It was called Uḥud because it stands alone among those mountains (4).

In al-Ṣaḥīḥ (5) it is related: “Uḥud is a mountain that loves us and we love it.”

Some said: the intended meaning is its inhabitants.
Others said: it used to give him glad tidings of his family’s nearness when he returned from travel, as a lover would.
Yet others took it at face value, in line with Allah’s saying, “And indeed, there are stones from which rivers burst forth, and others that split so that water flows out, and others that fall down in awe of Allah” (2:74).

And in the ḥadīth of Abū ʿAbs ibn Jabr (6): “Uḥud loves us and we love it; it stands at a gate of Paradise, while ʿĪr (7) hates us …”