Abu Dawud
Fasting
Book Number: 007 / Hadith Number: 2317
Narated By AbuHurayrah : The Prophet (pbuh) said: The end of Ramadan is on the day when you end it, and the 'Id (festival) of sacrifice is on the day when you sacrifice. The whole of Arafah is the place of staying, and the whole of Mina is the place of sacrifice, and all the roads of Mecca are the place of sacrifice, and the whole of Muzdalifah is the place of staying.