The Prophet (ﷺ) and Maimuna used to take a bath from a single pot.
Sahih al-Bukhari Book 5, Hadith 6
← Previous Hadith While I and my father were with Jabir bin `Abdullah, some people asked him about taking a bath. He replied, "A Sa` of water is sufficient for you." A man said, "A Sa` is not sufficient for me." Jabir said, "A Sa` was sufficient for one who had more hair than you and was better than you (meaning the Prophet)." And then Jabir (put on) his garment and led the prayer.

Sahih al-Bukhari Book 5, Hadith 5 Next Hadith → Allah's Messenger (ﷺ) said, "As for me, I pour water three times on my head." And he pointed with both his hands.

Sahih al-Bukhari Book 5, Hadith 7