Sunan Abu Dawud
275
Sahih+3

Sulaiman b. Yasar said that a man reported to him from Umm Salamah; There was a woman who had an issue of blood. And he narrated the rest of the tradition to the same effect saying; when the menstruation period is over and the time of prayer arrives, she should take a bath, as mentioned in the previous tradition

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid