The Prophet ﷺ entered the state of ihram for umrah, while his companions entered ihram for hajj. The Prophet ﷺ did not exit ihram, nor did those of his companions who had brought sacrificial animals with them, but the rest of them did exit ihram. Talha bin Ubaydullah was among those who had brought sacrificial animals, so he did not exit ihram.
أهل النبي ﷺ بعمرة وأهل أصحابه بحج، فلم يحل النبي ﷺ ولا من ساق الهدي من أصحابه وحل بقيتهم، فكان طلحة بن عبيد الله فيمن ساق الهدي فلم يحل.
Muslim narrated it in the book of Hajj (1239) via Muaz bin Muaz, from Shuba, "Muslim Qurri narrated to us, having heard Ibn Abbas say" (he then related it). Then he narrated it via Muhammad bin Jafar Ghundar, from Shuba, with his chain of transmission, except that he said, "Among those who did not have the sacrificial animal with them were Talha bin Ubaydullah and another man, so the two of them ended their state of ihram."So Muslim placed first the narration of Muaz bin Muaz from Shuba, which contains the affirmation, and followed it with the narration containing the negation, as though he were favoring the narration with the affirmation, even though people have differed over which of the two, Muaz bin Muaz or Jafar bin Muhammad Ghundar, was more reliable in transmitting from Shuba. What appears from Muslim's approach is that he favors Muaz's narration in this hadith, because of other supporting evidence that strengthens it, such as the hadith of Jabir and others. And Allah knows best.As for Nasai, he related the hadith (2813) via Ghundar from Shuba, following the general rule that Ghundar was the most reliable of people in transmitting from Shuba, and he did not mention the narration of Muaz from Shuba.