Sahih Bukhari
Sahih Bukhari Volume 003, Book 028, Hadith Number 045.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 28. Pilgrims Prevented from Completing the Pilgrimmage
Narated By Abu Huraira : Allah's Apostle said, "Whoever performs Hajj to this House (Ka'ba) and does not approach his wife for sexual relations nor commits sins (while performing Hajj), he will come out as sinless as a newly-born child. (Just delivered by his mother)."