Hadith 3

Sunan Ibn Majah

Book 2: The Book of the Prayer Sahih

Chapter 2

The Time Of The Fajr Prayer

باب وَقْتِ صَلاَةِ الْفَجْرِ ‏‏

Sahih
Sunan Ibn Majah 669
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنِ الزُّهْرِيِّ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، قَالَتْ كُنَّ نِسَاءُ الْمُؤْمِنَاتِ يُصَلِّينَ مَعَ النَّبِيِّ ـ صلى الله عليه وسلم ـ صَلاَةَ الصُّبْحِ ثُمَّ يَرْجِعْنَ إِلَى أَهْلِهِنَّ فَلاَ يَعْرِفُهُنَّ أَحَدٌ ‏.‏ تَعْنِي مِنَ الْغَلَسِ ‏.‏
It was narrated that 'Aishah said:

"The believing women used to perform the Subh prayer with the Prophet, then they would go back to their families and no one would recognize them," meaning of the darkness.