Chapter: It is recommended for the person performing Hajj in 'Arafat not to fast on the day of 'Arafah.
Umm al-Fadl (Allah be pleased with her) is reported to have said that some people among the Companions of the Messenger of Allah ( صلی اللہ علیہ وسلم ) were in doubt about fasting on the day of 'Arafa and we were with him on that day. I (Umm al-Fadl) sent him a cup of milk and he was halting at 'Arafa, and he drank that.
Authentic