It is narrated from Sayyidah Mu'adhah (may Allah have mercy on her) that she said: I asked Sayyidah Aishah (may Allah be pleased with her) about menstrual blood getting on a garment, and she (may Allah be pleased with her) said: "Wash it, and if the traces of the blood do not go away, change them with some yellow dye." And she (may Allah be pleased with her) said: "I used to have three menstruations in succession while with the Prophet (peace and blessings be upon him), and I would not wash a garment of mine."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الصلاة / 4113