Sahih al-Bukhari, Volume 7, Book 72, Hadith 798 (USC-MSA) ⓘ

Narrated Hafsa: (the wife of the Prophet) I said, "O Allah's Messenger! Why have the people finished their Ihram after performing the `Umra while you have not finished your lhram after your `Umra?" He said, "I have done Talbid (of my hair) and have decorated my Hadis with garlands, so I shall not finish my lhram till l have slaughtered my Hadi (animal for sacrifice).

حَدَّثَنِي إِسْمَاعِيلُ، قَالَ حَدَّثَنِي مَالِكٌ، عَنْ نَافِعٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، عَنْ حَفْصَةَ ـ رضى الله عنها ـ زَوْجِ النَّبِيِّ صلى الله عليه وسلم قَالَتْ قُلْتُ يَا رَسُولَ اللَّهِ مَا شَأْنُ النَّاسِ حَلُّوا بِعُمْرَةٍ، وَلَمْ تَحْلِلْ أَنْتَ مِنْ عُمْرَتِكَ قَالَ ‏ "‏ إِنِّي لَبَّدْتُ رَأْسِي، وَقَلَّدْتُ هَدْيِي، فَلاَ أَحِلُّ حَتَّى أَنْحَرَ ‏" ‏‏.‏