"I heard Umm Qais bint Mihsan say that she asked the Messenger of Allah ﷺ about menstrual blood that gets on one's clothes. He said: 'Scratch it with a stick and wash it with water and lotus leaves.'"  

أَنَّهَا سَأَلَتْ رَسُولَ اللَّهِ ﷺ عَنْ دَمِ الْحَيْضِ يُصِيبُ الثَّوْبَ قَالَ حُكِّيهِ بِضِلَعٍ وَاغْسِلِيهِ بِمَاءٍ وَسِدْرٍ  

"Scratch it, then rub it with water, then sprinkle water over it, and pray in it."  

عَنْ أَسْمَاءَ بِنْتِ أَبِي بَكْرٍ وَكَانَتْ تَكُونُ فِي حِجْرِهَا أَنَّ امْرَأَةً اسْتَفْتَتِ النَّبِيَّ ﷺ عَنْ دَمِ الْحَيْضِ يُصِيبُ الثَّوْبَ فَقَالَ حُتِّيهِ ثُمَّ اقْرُصِيهِ بِالْمَاءِ ثُمَّ انْضَحِيهِ وَصَلِّي فِيهِ