It was narrated by al-Ṭabarānī in al-Awsaṭ (1/174/2). Al-Haythamī said in Majmaʿ al-Zawāʾid (4/264–265):
“Among its narrators is Ṣadaqah ibn ʿAbd Allāh. Abū Ḥātim and others deemed him trustworthy, while Aḥmad and a group of scholars declared him weak; the rest of its narrators are narrators of the authentic collections.”
In sum, the hadith is undoubtedly authentic when its two routes are taken together with this corroborating report. Allah Most High is the One who grants success.
(Note)
Many routes of this hadith state that the prohibition took place on the day of the Conquest, and this is correct. Some of them state that it was during the Farewell Pilgrimage, but this is anomalous, as I have established in Irwāʾ al-Ghalīl fī Takhrīj Aḥādīth Manār al-Sabīl, nos. 1959–1960.
382 — “The food of the son of Adam has been set forth as a parable for this world. So consider what comes out of the son of Adam: however much he seasons and salts it, he knows what it will become.”
It was narrated by Ibn Ḥibbān in his Ṣaḥīḥ (2489), al-Ṭabarānī in al-Kabīr (1/27/2), al-Bayhaqī in al-Zuhd al-Kabīr (fol. 47/1), and ʿAbd Allāh ibn Aḥmad in Zawāʾid al-Musnad (5/136), through Abū Ḥudhayfah Mūsā ibn Masʿūd, who said: Sufyān narrated to us from Yūnus ibn ʿUbayd, from al-Ḥasan, from ʿUtayy, from Ubayy ibn Kaʿb, who said: The Messenger of Allah, peace and blessings be upon him, said—then he mentioned it.
Ibn Abī al-Dunyā also narrated it in al-Jūʿ (8/2–9) through other routes from Yūnus, with the same report.
I say: This is a chain whose narrators are trustworthy and are narrators of al-Bukhārī, apart from ʿUtayy—using the diminutive form—who is ʿUtayy ibn Ḍamrah al-Saʿdī, and he is trustworthy. However, it has two defects:
The first is that al-Ḥasan al-Baṣrī practised tadlīs, and he related it using the ambiguous “from” formula.