كتاب الحج
15  
The Book of Pilgrimage
(29)
Chapter: Clarifying that the pilgrim who has entered Ihram for Umrah should not exit Ihram after performing Tawaf before Sa'i; And the pilgrim who has entered Ihram for Hajj should not exit Ihram after performing Tawaf Al-Qudum, and the same applies to the pilgrim performing Qiran
(29)
باب مَا يَلْزَمُ مَنْ طَافَ بِالْبَيْتِ وَسَعَى مِنَ الْبَقَاءِ عَلَى الإِحْرَامِ وَتَرْكِ التَّحَلُّلِ ‏
Sahih Muslim 1236 a

Asma bint Abu Bakr (Allah be pleased with both of them) reported:

We set out (to Mecca) in a state of Ihram. Allah's Messenger (ﷺ) said: He who has the sacrificial animal with him should remain in the state of Ihram, but he who has not the sacrificial animal with him should put off Ihram. As I had not the sacrificial animal with me, I put off Ihram. And since Zubair (her husband) - had the sacrificial animal with him, he did not put off Ihram. She (Asma) said: I put on my clothes and then went out and sat by Zabair, whereupon he said: Go away from me, whereupon I said: Do you fear that I would jump upon you?
حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، أَخْبَرَنَا مُحَمَّدُ بْنُ بَكْرٍ، أَخْبَرَنَا ابْنُ جُرَيْجٍ، ح وَحَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ، - وَاللَّفْظُ لَهُ - حَدَّثَنَا رَوْحُ بْنُ عُبَادَةَ، حَدَّثَنَا ابْنُ جُرَيْجٍ، حَدَّثَنِي مَنْصُورُ، بْنُ عَبْدِ الرَّحْمَنِ عَنْ أُمِّهِ، صَفِيَّةَ بِنْتِ شَيْبَةَ عَنْ أَسْمَاءَ بِنْتِ أَبِي بَكْرٍ، - رضى الله عنهما - قَالَتْ خَرَجْنَا مُحْرِمِينَ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ مَنْ كَانَ مَعَهُ هَدْىٌ فَلْيَقُمْ عَلَى إِحْرَامِهِ وَمَنْ لَمْ يَكُنْ مَعَهُ هَدْىٌ فَلْيَحْلِلْ ‏"‏ ‏.‏ فَلَمْ يَكُنْ مَعِي هَدْىٌ فَحَلَلْتُ وَكَانَ مَعَ الزُّبَيْرِ هَدْىٌ فَلَمْ يَحْلِلْ ‏.‏ قَالَتْ فَلَبِسْتُ ثِيَابِي ثُمَّ خَرَجْتُ فَجَلَسْتُ إِلَى الزُّبَيْرِ فَقَالَ قُومِي عَنِّي ‏.‏ فَقُلْتُ أَتَخْشَى أَنْ أَثِبَ عَلَيْكَ.
Reference : Sahih Muslim 1236a
In-book reference : Book 15, Hadith 210
USC-MSA web (English) reference : Book 7, Hadith 2851
  (deprecated numbering scheme)