Sunan Ibn Majah #669 · The Book of the Prayer

Sunan Ibn MajahIt was narrated that 'Aishah said
Sunan Ibn Majah · Book 2 · The Book of the Prayer
Sunan Ibn Majah · كتاب 2 · كتاب الصلاة
"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
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 ‏.‏
Reference : Sunan Ibn Majah 669In-book reference : Book 2, Hadith 3