Sahih Bukhari Volume 4, Book 56, Hadith 2953

حَدَّثَنَا عَبْدُ اللَّهِ بْنُ مَسْلَمَةَ، عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنْ عَمْرَةَ بِنْتِ عَبْدِ الرَّحْمَنِ، أَنَّهَا سَمِعَتْ عَائِشَةَ ـ رضى الله عنها ـ تَقُولُ خَرَجْنَا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم لِخَمْسِ لَيَالٍ بَقِينَ مِنْ ذِي الْقَعْدَةِ، وَلاَ نُرَى إِلاَّ الْحَجَّ، فَلَمَّا دَنَوْنَا مِنْ مَكَّةَ أَمَرَ رَسُولُ اللَّهِ صلى الله عليه وسلم مَنْ لَمْ يَكُنْ مَعَهُ هَدْىٌ إِذَا طَافَ بِالْبَيْتِ وَسَعَى بَيْنَ الصَّفَا وَالْمَرْوَةِ أَنْ يَحِلَّ‏.‏ قَالَتْ عَائِشَةُ فَدُخِلَ عَلَيْنَا يَوْمَ النَّحْرِ بِلَحْمِ بَقَرٍ فَقُلْتُ مَا هَذَا فَقَالَ نَحَرَ رَسُولُ اللَّهِ صلى الله عليه وسلم عَنْ أَزْوَاجِهِ‏.‏ قَالَ يَحْيَى فَذَكَرْتُ هَذَا الْحَدِيثَ لِلْقَاسِمِ بْنِ مُحَمَّدٍ فَقَالَ أَتَتْكَ وَاللَّهِ بِالْحَدِيثِ عَلَى وَجْهِهِ‏

Narrated By 'Aisha : We set out in the company of Allah's Apostle five days before the end of Dhul Qa'da intending to perform Hajj only. When we approached Mecca Allah's Apostle ordered those who did not have the Hadi (i.e. an animal for sacrifice) with them, to perform the Tawaf around the Ka'ba, and between Safa and Marwa and then finish their Ihram. Beef was brought to us on the day of (i.e. the days of slaughtering) and I asked, "What is this?" Somebody said, Allah's Apostle has slaughtered (a cow) on behalf of his wives."