Musannaf Ibn Abi Shayba 27:18

Abu Khalid al-Ahmar narrated to us, from Yahya ibn Sa'id, from Muhammad ibn Yahya ibn Habban, from Khawlah bint Hakim, who said: I said, "O Messenger of Allah, do you have a Hawd (fountain/cistern)?" He said, "Yes, and the most beloved of those who will come to it to me are your people."