He said, "We used to perform tamattu with Umrah together with the Messenger of Allah ﷺ, and we would slaughter a cow on behalf of seven people, sharing in it together."
قال كنا نتمتع مع رسول الله ﷺ بالعمرة فنذبح البقرة عن سبعة نشترك فيها.
Muslim narrated it (1318: 355) from Yahya bin Yahya, who said, Hushaym informed us, from Abdul-Malik (that is Ibn Abu Sulayman), from Ataa (that is Ibn Abu Rabah), from Jabir bin Abdullah, and he mentioned it.As for what is narrated from Ibn Abbas, who said, "We were with the Prophet ﷺ on a journey, and the time of sacrifice came, so we shared in a cow, seven of us, and in a camel, ten of us," this is shadh.Tirmidhi (905), Nasai (4392), Ibn Majah (3131), Imam Ahmad (2484), Ibn Khuzayma (2908), and Ibn Hibban (4007) all narrated it through the route of Fadl bin Musa, from Husayn bin Waqid, from Ilba bin Ahmar, from Ikrima, from Ibn Abbas, and he mentioned it.Tirmidhi said, "This is a hasan gharib hadith, and it is the hadith of Husayn bin Waqid."Hakim narrated it (4/230) through the route of Ali bin Hasan bin Shaqiq, who said, Husayn bin Waqid narrated to us, from Ikrima, with this chain. And he said, "It is sahih according to the criterion of Bukhari."I say, this is questionable, because between Husayn bin Waqid and Ikrima there is a man, namely Ilba bin Ahmar, as in the previous chain. Abu Yaala Khalili said, "Husayn bin Waqid practices tadlis in narrating from Ikrima, the freed slave of Ibn Abbas, and he never actually met him."Moreover, according to the requirements of Hakim's own methodology, it ought to be according to the criterion of the two Shaykhs, since Muslim is among those who narrated from him, while Bukhari only narrated from him for corroboration, not as primary evidence.Husayn bin Waqid is a disputed narrator, though his hadith is hasan so long as he does not contradict others or his hadith does not contain some irregularity. His statement in this hadith, "and in a camel, ten," contradicts the earlier hadith of Jabir, "a camel counts for seven."For this reason Bayhaqi said, following the hadith of Ibn Abbas, "The hadith of Abu Zubayr is more sahih than this. He witnessed Hudaybiya, and witnessed the Hajj and the Umrah, and he informed us that the Prophet ﷺ commanded them that seven should share in one camel, so it is more deserving of acceptance." End of quote. Sunan al-Kubra (5/236).Tirmidhi said, "The practice according to this among the people of knowledge from the Companions of the Prophet ﷺ and others is that a camel counts for seven and a cow counts for seven. This is the view of Sufyan Thawri, Shafii, and Ahmad. It is also narrated from Ibn Abbas, from the Prophet ﷺ, that a cow counts for seven and a camel counts for ten, and this is the view of Ishaq, who used this hadith as his evidence." End of quote.