Musnad Abu Ya'la al-Mawsili 149:45

Surayj ibn Yunus narrated to us, Abu Mu'awiyah narrated to us, from 'Asim, from Tubalah bint Yazid al-'Abshamiyyah, from 'Aishah, who said: "Nabidh (a drink made by soaking fruit in water) used to be prepared for the Prophet, peace and blessings of Allah be upon him, in a waterskin. We would take a handful of raisins or a handful of dates and cast it into the waterskin, then pour water over it at night, and he would drink it during the day; or [we would do it] during the day, and he would drink it at night."