Volume 2, Book 26, Number 723:
Narrated Um Al-Fadl bint Al Harith:
On the day of ‘Arafat, some people who were with me, differed about the fasting of the Prophet
(p.b.u.h) some said that he was fasting while others said that he was not fasting. So I sent a bowl full
of milk to him while he was riding his camel, and he drank that milk.