Musnad Abu Ya'la al-Mawsili 152:206

Ishaq narrated to us, Abd al-Aziz ibn Muhammad narrated to us, from Amr ibn Abi Amr, from Ubayd Allah ibn Abd Allah ibn Utbah, from Ibn Mas'ud, who said: I saw the Messenger of Allah (peace and blessings of Allah be upon him) eating meat, then he would stand for prayer, and he would not touch a drop of water.