Musannaf Ibn Abi Shayba 13:989

Abu Bakr narrated to us, he said: Ibn ‘Uyaynah narrated to us, from ‘Amr, from Abu al-Minhal, he said: I heard Iyas ibn ‘Abd al-Muzani, and he saw people selling water, so he said: "Do not sell water, for I heard the Messenger of Allah (may Allah bless him and grant him peace) forbidding that water be sold."