Sahih Bukhari Volume 3, Book 26, Hadith 1797

حَدَّثَنَا أَحْمَدُ بْنُ عِيسَى، حَدَّثَنَا ابْنُ وَهْبٍ، أَخْبَرَنَا عَمْرٌو، عَنْ أَبِي الأَسْوَدِ، أَنَّ عَبْدَ اللَّهِ، مَوْلَى أَسْمَاءَ بِنْتِ أَبِي بَكْرٍ حَدَّثَهُ أَنَّهُ، كَانَ يَسْمَعُ أَسْمَاءَ تَقُولُ كُلَّمَا مَرَّتْ بِالْحَجُونِ صَلَّى اللَّهُ عَلَى مُحَمَّدٍ لَقَدْ نَزَلْنَا مَعَهُ هَا هُنَا، وَنَحْنُ يَوْمَئِذٍ خِفَافٌ، قَلِيلٌ ظَهْرُنَا، قَلِيلَةٌ أَزْوَادُنَا، فَاعْتَمَرْتُ أَنَا وَأُخْتِي عَائِشَةُ وَالزُّبَيْرُ وَفُلاَنٌ وَفُلاَنٌ، فَلَمَّا مَسَحْنَا الْبَيْتَ أَحْلَلْنَا، ثُمَّ أَهْلَلْنَا مِنَ الْعَشِيِّ بِالْحَجِّ‏

Narrated By Al-Aswad : Abdullah the slave of Asma bint Abu Bakr, told me that he used to hear Asma', whenever she passed by Al-Hajun, saying, "May Allah bless His Apostle Muhammad. Once we dismounted here with him, and at that time we were travelling with light luggage; we had a few riding animals and a little food ration. I, my sister, 'Aisha, Az-Zubair and such and such persons performed 'Umra, and when we had passed our hands over the Ka'ba (i.e. performed Tawaf round the Ka'ba and between As-Safa and Al-Marwa) we finished our Ihram. Later on we assumed Ihram for Hajj the same evening."