Hadith 2784
Lady Aisha (may Allah be pleased with her) narrates that we set out with the Messenger of Allah (peace be upon him) (on the journey of Hajj), and we had assumed Ihram only for Umrah. Therefore, those who had assumed Ihram only for Umrah performed the Tawaf of the Sacred House (Ka'bah) and, after performing Sa'i between Safa and Marwah, became halal (came out of the state of Ihram).
Hadith 2785
Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) narrates that the Prophet Muhammad (peace be upon him) instructed his companions to convert their Hajj into Umrah, then perform Tawaf of the Sacred House (Ka'bah), cut or shave their hair (and become halal), except for those who had sacrificial animals with them (they should perform Qiran Hajj).