[Machine] That the messenger of Allah ﷺ was asked by a woman about menstrual blood staining the garment. He said, "Rub it off with water, then sprinkle it with water, then pray in it."  

أَنَّ رَسُولَ اللهِ ﷺ سَأَلْتُهُ امْرَأَةٌ عَنْ دَمِ الْحَيْضِ يُصِيبُ الثَّوْبَ قَالَ حُتِّيهِ ثُمَّ اقْرُصِيهِ بِالْمَاءِ ثُمَّ رُشِّيهِ ثُمَّ صَلِّي فِيهِ  

There were fifty prayers (obligatory in the beginning); and (in the beginning of Islam) washing seven times because of sexual defilement (was obligatory); and washing the urine from the cloth seven times (was obligatory). The Apostle of Allah ﷺ kept on praying to Allah until the number of prayers was reduced to five and washing because of sexual defilement was allowed only once and washing the urine from the clothe was also permitted only once. (Using translation from Abū Dāʾūd 247)   

كَانَتِ الصَّلَاةُ خَمْسِينَ وَالْغُسْلُ مَنَ الْجَنَابَةِ سَبْعَ مِرَارٍ وَغَسْلُ الثَّوْبِ مِنَ الْبَوْلِ سَبْعَ مِرَارٍ فَلَمْ يَزَلْ رَسُولُ اللهِ ﷺ يَسْأَلُ حَتَّى جُعِلَتِ الصَّلَاةُ خَمْسًا وَالْغُسْلُ مِنَ الْجَنَابَةِ مَرَّةً وَغَسْلُ الثَّوْبِ مَنَ الْبَوْلِ مَرَّةً