Muwatta Malik, Book 20, Hadith 725 (In-Book)

Yahya related to me from Malik from Hisham ibn Urwa that Fatima bint al-Mundhir said, "We used to veil our faces when we were in ihram in the company of Asma bint Abi Bakr as-Siddiq." 20.7 Wearing Perfume during Hajj.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ فَاطِمَةَ بِنْتِ الْمُنْذِرِ، أَنَّهَا قَالَتْ كُنَّا نُخَمِّرُ وُجُوهَنَا وَنَحْنُ مُحْرِمَاتٌ وَنَحْنُ مَعَ أَسْمَاءَ بِنْتِ أَبِي بَكْرٍ الصِّدِّيقِ ‏.‏

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also referenced under: Book 20, Hadith 16 (USC-MSA)