Sunan Abi Dawud
Hadith #357
Mu'adhah said that 'Aishah was asked about (washing) the clothes of a menstruating woman smeared with blood. She said:She should wash it; in case mark is not removed she should change it by applying some yellow color. I had three menstruations together while I lives with the Messenger of Allah (ﷺ), but I did not wash my clothes