Messenger of Allah, I have only one clothe and I menstruate in it, how should I do ? He said: When you are purified, wash it and pray in it. She asked: If the blood is not removed, (then what) ? He said: It is enough for you to wash the blood, its mark will not do any harm to you. (Using translation from Abū Dāʾūd 365)
أَنَّ خَوْلَةَ بِنْتَ يَسَارٍ أَتَتْ رَسُولَ اللهِ ﷺ فَقَالَتْ لَيْسَ لِي إِلَّا ثَوْبٌ وَاحِدٌ وَأَنَا أَحِيضُ فِيهِ فَكَيْفَ أَصْنَعُ؟ فَقَالَ إِذَا طَهُرْتِ فَاغْسِلِي ثَوْبَكِ ثُمَّ صَلِّي فِيهِ قَالَتْ أَرَأَيْتَ إِنْ لَمْ يَخْرُجِ الدَّمُ مِنَ الثَّوْبِ؟ قَالَ يَكْفِيكِ الْمَاءُ وَلَا يَضُرُّكِ أَثَرُهُ تَفَرَّدَ بِهِ ابْنُ لَهِيعَةَ