"The Messenger of Allah was asked about menstrual blood that gets on clothing. He said: 'Rub it off, wash it and perform prayer in (the garment).'"
سُئِلَ رَسُولُ اللَّهِ ﷺ عَنْ دَمِ الْحَيْضِ يَكُونُ فِي الثَّوْبِ قَالَ اقْرُصِيهِ وَاغْسِلِيهِ وَصَلِّي فِيهِ
I asked the Prophet ﷺ about the blood of menstruation on the clothe. He said: Erase it off with a piece of wood and then wash it away with water and the leaves of the lote-tree. (Using translation from Abū Dāʾūd 363)
سَأَلْتُ النَّبِيَّ ﷺ عَنْ دَمِ الْحِيضَ يَكُونُ فِي الثَّوْبِ قَالَ «اغْسِلِيهِ بِمَاءٍ وَسِدْرٍ وَحُكِّيهِ بِضِلَعٍ»
" عَنْ أَسْمَاءَ بِنْتِ أَبِي بَكْرٍ قالت سئل النبي ﷺ عَنْ دَمِ الحَيْضَة يَكُونُ فِي الثَّوْبِ؟ فَقَالَ: حُتِّيهِ ثُمَّ أقْرُصِيه بِالماءِ، وَاغْسِلِيهِ، وَصَلَّى فِيهِ".