Sunan Abi Dawud 350
سنن أبي داود#350SahihExplaining the meaning of the words ghassala and ightasala (that occur in tradition 345) Sa'id (b. 'Abd al-'Aziz) said:One should wash one's head and body well (And not that one should make one's wife wash)
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih Maqtu
Muhammad Muhyi Al-Din Abdul HamidSahih Maqtu
Zubair Ali ZaiIsnaad Sahih
In-book reference: 1:350