Sahih Al Bukhari – Book of Virtues Of The Qur'an
Volumn 006, Book 061, Hadith Number 560.
—————————————–
Narated By Abu Mas'ud Al-Ansari : The Prophet said, "If one recites the last two Verses of Surat-al-Baqara at night, it is sufficient for him (for that night)."
Junaid Tahir