Hadith 9.1
Purification
Asma’ daughter of Abu Bakr said that a woman asked God's messenger to tell her what one should do when blood from her menses dropped on her garment. He replied, “When blood from her menses drops on the garment of any of you, she should rub it with her fingers and sprinkle water on it, then she may pray in it.” (Bukhari and Muslim.)
وَعَنْ أَسْمَاءَ بِنْتِ أَبِي بَكْرٍ الصّديق أَنَّهَا قَالَتْ: سَأَلَتِ امْرَأَةٌ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَتْ يَا رَسُولَ اللَّهِ أَرَأَيْتَ إحدانا إِذا أصَاب ثوبها الدَّم من الْحَيْضَة كَيْفَ تَصَنُّعُ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «إِذا أصَاب ثوب إحداكن الدَّم مِنَ الْحَيْضَةِ فَلْتَقْرُصْهُ ثُمَّ لِتَنْضَحْهُ بِمَاءٍ ثُمَّ لتصلي فِيهِ»
Hadith gradings, numbering and translations can differ between editions. For legal rulings or detailed interpretation, consult qualified scholarship and the referenced edition.