Sahih al-Bukhari 872
Sahih al-Bukhari · Book 10: Call to Prayers (Adhaan) · Returning of the women immediately after the Fajr prayer and their staying in the mosque for a short period only
Narrated `Aisha:
حَدَّثَنَا يَحْيَى بْنُ مُوسَى ، حَدَّثَنَا سَعِيدُ بْنُ مَنْصُورٍ ، حَدَّثَنَا فُلَيْحٌ ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ الْقَاسِمِ ، عَنْ أَبِيهِ ، عَنْ عَائِشَةَ ، رضى الله عنها أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يُصَلِّي الصُّبْحَ بِغَلَسٍ فَيَنْصَرِفْنَ نِسَاءُ الْمُؤْمِنِينَ، لاَ يُعْرَفْنَ مِنَ الْغَلَسِ، أَوْ لاَ يَعْرِفُ بَعْضُهُنَّ بَعْضًا.
Allah's Messenger (ﷺ) used to offer the Fajr prayer when it was still dark and the believing women used to return (after finishing their prayer) and nobody could recognize them owing to darkness, or they could not recognize one another.