The believing women observed the morning prayer with the Messenger of Allah ﷺ wrapped in their mantles. They then went back to their houses and were unrecognisable, because of the Messenger of Allah's ﷺ praying in the darkness before dawn.
أَنَّ عَائِشَةَ زَوْجَ النَّبِيِّ ﷺ قَالَتْ لَقَدْ كَانَ نِسَاءٌ مِنَ الْمُؤْمِنَاتِ يَشْهَدْنَ الْفَجْرَ مَعَ رَسُولِ اللَّهِ ﷺ مُتَلَفِّعَاتٍ بِمُرُوطِهِنَّ ثُمَّ يَنْقَلِبْنَ إِلَى بُيُوتِهِنَّ وَمَا يُعْرَفْنَ مِنْ تَغْلِيسِ رَسُولِ اللَّهِ ﷺ بِالصَّلاَةِ