كتاب صلاة العيدين
8
The Book of Prayer - Two Eids
(1)
Chapter: It Is Permissible For Women To Go Out To The 'Id Prayer And Attend The Khutbah, Separated From The Men
(1)
باب ذِكْرِ إِبَاحَةِ خُرُوجِ النِّسَاءِ فِي الْعِيدَيْنِ إِلَى الْمُصَلَّى وَشُهُودِ الْخُطْبَةِ مُفَارِقَاتٌ لِلرِّجَالِ
Sahih Muslim 890 b

Umm Atiyya reported:

We were commanded to go out as well as the hidden away ladies and those unmarried. She said menstruating women were to come out amongst you, but remain behind people and pronounce takbir (Allah-o-Akbar) along with them.
حَدَّثَنَا يَحْيَى بْنُ يَحْيَى، أَخْبَرَنَا أَبُو خَيْثَمَةَ، عَنْ عَاصِمٍ الأَحْوَلِ، عَنْ حَفْصَةَ بِنْتِ، سِيرِينَ عَنْ أُمِّ عَطِيَّةَ، قَالَتْ كُنَّا نُؤْمَرُ بِالْخُرُوجِ فِي الْعِيدَيْنِ وَالْمُخَبَّأَةُ وَالْبِكْرُ قَالَتِ الْحُيَّضُ يَخْرُجْنَ فَيَكُنَّ خَلْفَ النَّاسِ يُكَبِّرْنَ مَعَ النَّاسِ ‏.‏
Reference : Sahih Muslim 890 b
In-book reference : Book 8, Hadith 11
USC-MSA web (English) reference : Book 4, Hadith 1933
  (deprecated numbering scheme)