Narrated ['Aishah (RA)]:

The Prophet (ﷺ) said: "The Salat (prayer) of a woman, who has reached puberty, is not accepted unless she is wearing a Khimar." [Reported by al-Khamsah except an-Naza'i. And Ibn Khuzaimah graded it Sahih (authentic)].

وَعَنْهَا , عَنْ اَلنَّبِيِّ ‏- صلى الله عليه وسلم ‏-قَالَ : { لَا يَقْبَلُ اَللَّهُ صَلَاةَ حَائِضٍ إِلَّا بِخِمَارٍ } رَوَاهُ اَلْخَمْسَةُ إِلَّا النَّسَائِيُّ , وَصَحَّحَهُ اِبْنُ خُزَيْمَةَ.‏ [1]‏