Safiyyah bint Abi Ubayd narrates from one of the wives of the Prophet (peace and blessings be upon him) that she said: O Prophet (peace and blessings be upon him)! What is the matter with the people, that they have left the state of ihram and you have not left the state of ihram? He (peace and blessings be upon him) said: "I have matted my hair (talbid) and garlanded my sacrificial animal, so the time for me to leave the state of ihram is the same as when my sacrificial animal is slaughtered."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 19694