Sunan Abi Dawud 302
سنن أبي داود#302Da'ifNarrated Ali ibn AbuTalib: The woman who has a prolonged flow of blood should wash herself every day when her menstrual period is over and take a woollen cloth greased with fat or oil (to tie over the private parts)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniDaif
Muhammad Muhyi Al-Din Abdul HamidDaif
Shuaib Al ArnautDaif
Zubair Ali ZaiDaif
In-book reference: 1:302