Sunan Abi Dawud 81
سنن أبي داود#81SahihNarrated Humayd al-Himyari: Humayd al-Himyari reported: I met a person (among the Companion of Prophet) who remained in the company of the Prophet (ﷺ)for four years as AbuHurayrah remained in his company. He reported: The Messenger of Allah (ﷺ) forbade that the female should wash with the water left over by the male, and that the male should wash with the left-over of the female. The version of Musaddad adds: "That they both take the handful of water together
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 ZaiIsnaad Sahih
In-book reference: 1:81