Sahih Bukhari
Sahih Bukhari Volume 001, Book 010, Hadith Number 527.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 10. Times of the Prayers
Narated By Ibn 'Umar : Allah's Apostle said, "Whoever misses the 'Asr prayer (intentionally) then it is as if he lost his family and property."