Ja'far bin Amr bin Umayyah al-Damri narrates from his father, Sayyiduna Amr bin Umayyah al-Damri (may Allah be pleased with him), that he said: I saw the Messenger of Allah (peace and blessings be upon him) cutting and eating the shoulder of a goat with a knife. In the meantime, he was called for prayer, so the Prophet (peace and blessings be upon him) put down the knife, performed the prayer, and did not perform ablution.
It is narrated from Sayyiduna Ibn Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) drank milk. Then he asked for water, rinsed his mouth, and said: "Milk makes the mouth greasy."