This isnād is good: its transmitters are trustworthy and belong to the narrators relied upon by the two Shaykhs, apart from Khālid ibn Maysarah, who is truthful, as Ibn ʿAdī stated; al-Ḥāfiẓ added, “He is sound in ḥadith.”

Ninth: Maʿqil ibn Yasār said:
“We were travelling with the Messenger of Allah ﷺ and halted at a place where garlic was plentiful. Some of the Muslims ate from it, then came to the prayer-ground to pray with the Prophet ﷺ, and he forbade them to do so. They returned again to the prayer-ground, and he forbade them; they came yet again, and he forbade them; they came a fourth time, and when he noticed its odor on them he said:
‘Whoever has eaten from this tree must not come near us in our mosque.’”

Ahmad and al-Ṭabarānī recorded it in al-Ṣaghīr in abridged form through the route of al-Ḥakam ibn Ṭuhmān Abū ʿIzzah al-Dabbāgh, from Abū al-Rabab, the freedman of Maʿqil ibn Yasār, from Maʿqil with this wording. After citing the abridged version, al-Haythamī said: “It was narrated by Ahmad and al-Ṭabarānī in al-Kabīr and al-Ṣaghīr, and in its chain is Abū al-Zayyāt, who is unknown.”

I say: This is how it appears in our copy—“al-Zayyāt,” spelled with a zāʾ followed by a yāʾ with the two dots below and another letter with dots above—whereas in two places of the Musnad and in al-Ṭabarānī the reading is “al-Rabab,” with a dotless rāʾ followed by two bāʾs with dots beneath.(1) In any case, I have not found anyone who gave him a biographical entry.