Sunan Ibn Majah 604
سنن ابن ماجه#604SahihIt was narrated that 'Ubaid bin 'Umair said:"Aishah heard that 'Abdullah bin 'Amr was telling his wives to undo their braids (when they bathed). She said: 'How odd that Ibn 'Amr would do that! Why does he not tell them to shave their heads? The Messenger of Allah and I used to bathe from a single vessel, and I never did more than pour three handfuls of water over my head
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Fouad Abd al-BaqiSahih
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Muslim
In-book reference: 1:338