Silsilah as-Sahihah 429 — How to purify menstrual cloth

Sayyidah Umm Qais bint Mihsan (may Allah be pleased with her) says: I asked the Noble Prophet (peace and blessings of Allah be upon him) about menstrual blood that gets on a garment. He (peace be upon him) said: "Scrape it off with a stick (or something similar), then wash it with water and lotus leaves."