Abu Dawud
Purification (Kitab Al-Taharah)
Book Number: 001 / Hadith Number: 363
Narated By Umm Qays daughter of Mihsan : I asked the Prophet (pbuh) 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.