Sunan Abi Dawud 251
سنن أبي داود#251SahihUmm Salamah said:one of the Muslims asked, and Zubair reported: Umm Salamah (herself) asked: Messenger of Allah. I am a women who keeps her hair closely plaited; should I undo it when I wash after sexual defilement? He replied (no), it is enough for you to throw three handfuls over it. Then pour water over all your body and will be purified
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim (330)
In-book reference: 1:251