Sahih Bukhari
Sahih Bukhari Volume 002, Book 018, Hadith Number 155.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 18. Eclipses
Narated By 'Abdullah bin 'Amr : "When the sun eclipsed in the life-time of Allah's Apostle an announcement was made that a prayer was to be offered in congregation."