Ibn Majah 2967

[Sahih]Busiri said, "This chain is daif. Qasim bin Abdullah is discarded, and Ahmad called him a liar and accused him of fabrication." But he was not the only one to narrate it. Ibn Abu Shayba recorded, in the Book of Hajj, in the chapter on those who held that Hajj should be performed alone without combining it with Umrah, hadith 14302, with a sahih chain, from Aswad, who said, "Abu Bakr, Umar, and Uthman performed it alone," meaning they performed Hajj by itself. This was likewise transmitted by Muhammad bin Sirin, Shuba, and others. Combining Umrah and Hajj with a break between them, and combining them jointly without a break, are also established, so all of these reports are sahih.