The Messenger of Allah ﷺ said, "Shall I tell you about the borrowed billy-goat?"They replied, "Yes, Messenger of Allah."He said, "He is the muhallil. May Allah curse the muhallil and the one for whom the marriage is made lawful."
قال رسول الله ﷺ: ألا أخبركم بالتيس المستعار؟ قالوا: بلى يا رسول الله! قال: هو المحلل. لعن الله المحلل والمحلل له.
Ibn Majah (1936) narrated it from Yahya bin Uthman bin Salih Misri, who said, "My father narrated to us, saying, I heard Layth bin Saad say, Abu Musab Musharrah bin Han said to me, Uqba bin Amir said," and then he related it. Hakim (2/198-199) also narrated it by this same route and said, "sahih isnad," and said, "Abu Salih, the scribe of Layth, mentioned, on the authority of Layth, that he had heard it directly from Musharrah bin Han." Then, after presenting the isnad which included Layth's hearing from Musharrah, he said, "sahih isnad." It seems he intended to respond to Abu Zura's statement, as recorded in Al-Ilal (1/411) of Ibn Abu Hatim, "I mentioned this hadith to Yahya bin Abdullah bin Bukayr, and informed him of the narration of Abdullah bin Salih and Uthman bin Salih, and he strongly rejected this, saying, Layth never heard anything from Musharrah, nor did he narrate anything from him. Rather, Layth bin Saad narrated this hadith to me from Sulayman bin Abdul-Rahman, that the Messenger of Allah ﷺ said..." Abu Zura said, "In my view, the correct version is the hadith of Yahya, meaning Ibn Abdullah bin Bukayr." End of quote.I say, the one who affirms takes precedence over the one who denies, and the isnad is hasan because of Abu Musab Musharrah bin Han, for although there is disagreement about him, his hadith is hasan. Ibn Main, Ajli, and Ibn Hibban all deemed him trustworthy, and a large number of narrators related from him. Ibn Hibban then mentioned him again in Al-Majruhin, saying, "He narrates from Uqba bin Amir hadiths that are objectionable and unsupported by others, and the correct approach regarding him is to disregard the reports he related alone, while giving weight to what agrees with trustworthy narrators." However, the statement of Ibn Adi is more accurate, for after examining his narrations he said, "I hope there is no harm in him."