Muwatta Malik, Book 20, Hadith 230 (USC-MSA)

Yahya related to me from Malik from Nafi and Abdullah ibn Dinar from Abdullah ibn Umar that Umar ibn al-Khattab gave a khutba to the people at Arafa and taught them the conduct of the hajj, and one of the things he said to them in his speech was, "When you get to Mina and have stoned the jamra then whatever is haram for someone doing the hajj becomes halal, except women and scent. No-one should touch women or scent until he has done tawaf of the House."

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ نَافِعٍ، وَعَبْدِ اللَّهِ بْنِ دِينَارٍ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ، خَطَبَ النَّاسَ بِعَرَفَةَ وَعَلَّمَهُمْ أَمْرَ الْحَجِّ وَقَالَ لَهُمْ فِيمَا قَالَ إِذَا جِئْتُمْ مِنًى فَمَنْ رَمَى الْجَمْرَةَ فَقَدْ حَلَّ لَهُ مَا حَرُمَ عَلَى الْحَاجِّ إِلاَّ النِّسَاءَ وَالطِّيبَ لاَ يَمَسَّ أَحَدٌ نِسَاءً وَلاَ طِيبًا حَتَّى يَطُوفَ بِالْبَيْتِ ‏.‏

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also referenced under: Book 20, Hadith 927 (In-Book)