Sahih al-Bukhari, Hadith 872 ⓘ
Narrated `Aisha: Allah's Messenger 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.
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.
also referenced under: Book 10, Hadith 263 (In-Book) & Volume 1, Book 12, Hadith 831 (USC-MSA)