Sahih Al Bukhari Hadith Number 1682

Narrated `Abdullah: I never saw the Prophet (peace be upon him) offering any prayer not at its stated time except two; he prayed the Maghrib and the `Isha’ together and he offered the morning prayer before its usual time.

25  Hajj (Pilgrimage)
Hadith number 1682
Volume no 2
Chapter: 99 (At what time is the Fajr prayer to be offered at Jam’)