Hajj Mabrur (accepted Hajj) makes a muslim pure and free of sins

Abu Hurairah (Radhiallaho anha) reported:

The Messenger of Allah (Sallallaahu 'alaihi wasallam) said,

"Whoever performs Hajj (pilgrimage) and does not have sexual relations (with his wife), nor commits sin, nor disputes unjustly (during Hajj), then he returns from Hajj as pure and free from sins as on the day on which his mother gave birth to him.''

[Al-Bukhari and Muslim].