Sahih Muslim Book 003, Hadith Number 0645.
Chapter : Law of Shari'ah pertaining to the plaited hair of the woman who takes a bath.
This Hadith is narrated by the same chain of transmitters by Ahmad al. Darimi, Zakariya b. 'Adi, Yazid, i.e.' Ibn Zurai', Rauh b. al-Qasim, Ayyub b. Musa with the same chain of transmitters, and there is a mention of these words: "Should I undo the plate and wash it, because of sexual intercourse?" and there is no mention of menstruation.