وَعَنْهَا، عَنْ اَلنَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ: «لَا يَقْبَلُ اَللَّهُ صَلَاةَ حَائِضٍ إِلَّا بِخِمَارٍ»
The Prophet (sallallahu alayhi wa sallam) said: “The Salat (prayer) of a woman, who has reached puberty, is not accepted unless she is wearing a Khimar.”.
Bulugh al-Maram 247, Book 2, The Book of Prayer, Hadith 68. 1 min read