This is 'Umrah that we have benefited from. Whoever does not have a Hadi with him, let him exit Ihram completely. Now 'Umrah is permissible during the months of Hajj."
Sunan an-Nasa'i Book 24, Hadith 197
← Previous Hadith "The Messenger of Allah enter Ihram for 'Umrah and his companions enter Ihrahm for Hajj. He told those who did not have a Hadi with them to exit Ihram. Among those who did not have a Hadi with them was Tallah bin 'Ubaidullah and another man, so they exited Ihram."

Sunan an-Nasa'i Book 24, Hadith 196 Next Hadith → he was with Messenger of Allah. When they were partway to Makkah, he lagged behind with some companions of his whowere in Ihram, but he was not in Ihram. He saw an onager, so he mounted his horse, then he asked his companions to hand him his whip, but they refused. He asked them to hand him his spear, but they refused. He took it, then chased the onager and killed it. Some of the Companions of the Messenger of Allah ate from it but others refused. The caught up with the Messenger of Allah and asked him about that, and he said: "That is food that Allah, the Might and Sublime, gave to you."

Sunan an-Nasa'i Book 24, Hadith 198