All the narrators above him are trustworthy (1); consequently, the ḥadith possesses a sound chain, and to rate it as merely ḥasan is inadequate.
Ibn Lahīʿah also narrated a corroborating report from Sulaymān ibn Ziyād, and on another occasion he said, “from Khālid ibn Abī ʿImrān and Sulaymān ibn Ziyād al-Ḥaḍramī,” with similar wording. Aḥmad recorded this version. Although Ibn Lahīʿah’s memory is poor, if he did preserve the report correctly, the ḥadith would have three independent routes back to ʿAbd Allāh ibn al-Ḥārith.
There is, moreover, a supporting narration from Ibn ʿUmar: that the Prophet ﷺ was brought faḍīkh (a drink made from unripe dates) in Masjid al-Faḍīkh and drank it, and for that reason the mosque received its name. Aḥmad recorded it with the chain: “Wakīʿ narrated to us; ʿAbd Allāh ibn Nāfiʿ narrated to us, from his father, from him.” All its transmitters are those relied upon by the Six Books and are trustworthy—apart from ʿAbd Allāh ibn Nāfiʿ, who is weak, as stated in al-Taqrīb.
Abū Yaʿlā also reported it through the same route, in the wording: that the Prophet ﷺ was brought a jar of faḍīkh made from unripe dates while he was in Masjid al-Faḍīkh, so he drank it, and thus the mosque was called Masjid al-Faḍīkh. Al-Majmaʿ cites this version.