A Jewish man invited the Prophet ﷺ to a meal of barley bread and rancid fat, and he accepted the invitation.
أن يهوديا دعا النبي ﷺ إلى خبز شعير، وإهالة سنخة فأجابه.
Ahmad (13201) narrated it from Abdul-Samad, who said, Aban narrated to us, he said, Qatada narrated to us, from Anas, and he mentioned it. Its isnad is sahih.But Bukhari, in the Book of Sales (2069), narrated through Hisham Dastawai, from Qatada, from Anas, that he walked to the Messenger of Allah ﷺ with barley bread and rancid fat. The Prophet ﷺ had pawned a coat of armor of his in Madinah with a Jew, and took barley from him for his family.So perhaps Aban, who is Ibn Yazid Attar, abridged the hadith, and the story is as Hisham related it, so it was mistakenly attributed that a Jew had invited the Prophet ﷺ to a meal, when in fact Anas had brought this food from the Jew by means of the pledged item. There is no mention in it of the "rancid fat," which is what is rendered from tail-fat and fat, and this may be food whose smell had changed due to the length of time it had been kept.On this subject there is also the hadith of Qabisa bin Hulb, from his father, who said, "I asked the Prophet ﷺ about the food of the Christians, and he said, 'Let no food in which you resembled Christianity stir doubt in your breast.'" Abu Dawud (3784), Tirmidhi (1565), Ibn Majah (2830), and Ahmad (21965, 21966) narrated it through routes from Simak bin Harb, who said, Qabisa bin Hulb narrated to me, from his father, and he mentioned it. Tirmidhi said, "This is a hasan hadith."But in its isnad is Qabisa bin Hulb, from whom only Simak bin Harb narrated. Ali bin Madini and Nasai said, "Unknown." Ibn Hibban mentioned him, as is his habit, in Thiqat. Indeed, Ajli even said, "A trustworthy successor!" And that is an instance of his leniency.Of similar meaning is the hadith of Adi bin Hatim, who said, "O Messenger of Allah, is there food I avoid only out of scrupulousness?" He said, "Then do not avoid food in which you resembled Christianity." This is part of a longer hadith. Abu Dawud Tayalisi (1129), Ahmad (18262, 19274), Ibn Hibban (332), and Bayhaqi (7/279) narrated it through routes from Shuba, from Simak bin Harb, who said, I heard Murri bin Qatari say, I heard Adi bin Hatim say, and he mentioned it.In its isnad is Murri bin Qatari, whom no one deemed trustworthy except Ibn Hibban in Thiqat (5/459). Dhahabi said in Mizan (4/95), "He is not known, and only Simak bin Harb narrated from him."As for his saying, in the hadith of Hulb, "yatakhalajanna," and in another version, "yakhtalijanna," it means, let it not stir doubt. As for his saying, "daaraat," it means "resembled," from "mudaraah," which denotes resemblance and closeness. The meaning is, let no doubt stir in your heart that what you resembled the Christians in is forbidden or foul or disliked. See Nihayah fi Gharib Hadith.