Whenever Allah's Messenger (ﷺ) took a bath of Janaba, he washed his hands first.
Sahih al-Bukhari Book 5, Hadith 15
← Previous Hadith The Prophet (ﷺ) and I used to take a bath from a single pot of water and our hands used to go in the pot after each other in turn.

Sahih al-Bukhari Book 5, Hadith 14 Next Hadith → The Prophet (ﷺ) and I used to take a bath from a single pot of water after Janaba.

Sahih al-Bukhari Book 5, Hadith 16