Pilgrims Prevented from Completing the Pilgrimmage

Bukhari :: Book 3 :: Volume 28 :: Hadith 46

Narrated Abu Huraira:

The Prophet said, "Whoever performs Hajj to this Ka'ba and does not approach his wife for sexual relations nor commit sins (while performing Hajj), he will come out as sinless as a new-born child, (just delivered by his mother)."