Sahih Bukhari
Sahih Bukhari Volume 005, Book 059, Hadith Number 345.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 59. Military Expeditions Led by the Prophet (PBUH) (Al-Maghaazi)
Narrated By Abu Masud Al-Badri: Allah's Apostle said, "It is sufficient for one to recite the last two Verses of Surat-al-Baqara at night."