Hafsa bint Sirin reported,

We used to prevent our young women from going out on the day of Eid. Then a woman came and stayed at the palace of Banu Khalaf, so I went to her. She related that her sister's husband had gone on twelve military expeditions with the Prophet ﷺ, and her sister had been with him on six of them. She said, "We used to tend to the sick and treat the wounded."She said, "Messenger of Allah, is there any harm if one of us does not have an outer garment, that she should not go out?"He replied, "Let her companion clothe her with part of her own outer garment, so they may witness the good and the supplication of the believers."Hafsah said, When Umm Atiya arrived, I went to her and asked her, "Did you hear such and such?"She replied, "Yes, by my father." She seldom mentioned the Prophet ﷺ without saying, "By my father."She said, He commanded that the young unmarried women, those kept in seclusion, should go out, or he said, the young unmarried women and those in seclusion. Ayub was uncertain which. And the menstruating women as well, but the menstruating women should keep away from the place of prayer, and they should witness the good and the supplication of the believers.She said, So I said to her, "The menstruating women?"She replied, "Yes. Does not the menstruating woman attend Arafat, and attend such and such, and attend such and such?"

Bukhari 980

Sahih

حدثنا أبو معمر قال حدثنا عبد الوارث قال حدثنا أيوب

عن حفصة بنت سيرين قالت

كنا نمنع جوارينا أن يخرجن يوم العيد فجاءت امرأة فنزلت قصر بني خلف فأتيتها فحدثت أن زوج أختها غزا مع النبي ﷺ ثنتي عشرة غزوة فكانت أختها معه في ست غزوات فقالت فكنا نقوم على المرضى ونداوي الكلمى فقالت يا رسول الله أعلى إحدانا بأس إذا لم يكن لها جلباب أن لا تخرج فقال لتلبسها صاحبتها من جلبابها فليشهدن الخير ودعوة المؤمنين قالت حفصة فلما قدمت أم عطية أتيتها فسألتها أسمعت في كذا وكذا قالت نعم بأبي وقلما ذكرت النبي ﷺ إلا قالت بأبي قال ليخرج العواتق ذوات الخدور أو قال العواتق وذوات الخدور شك أيوب والحيض ويعتزل الحيض المصلى وليشهدن الخير ودعوة المؤمنين قالت فقلت لها الحيض قالت نعم أليس الحائض تشهد عرفات وتشهد كذا وتشهد كذا

البخاري 980صحيح
Contents
Reference
Commentary
Ayat
Collection
Sahih Bukhari
Book
Two Eids
Chapter
If she does not have a jilbab on Eid
Numbering
Darussalam 980
Bukhari 980