It is narrated from Sayyiduna Muhammad bin Abdullah bin Jahsh (may Allah be pleased with him) that Sayyidah Zaynab bint Jahsh (may Allah be pleased with her) used to wash the head of the Messenger of Allah (peace and blessings be upon him) in a basin of brass. Abdullah bin Umar al-Umari (may Allah have mercy on him) said: I have seen that basin.
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 16610