Sayyiduna Ibn Abbas (may Allah be pleased with them both) said: My mother, Umm al-Fadl (may Allah be pleased with her), told me that milk was brought to the Prophet (peace and blessings be upon him) at Arafah, and he (peace and blessings be upon him) drank it while delivering the sermon.
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21478