Sahih al-Bukhari 1820
Sahih al-Bukhari · Book 27: Pilgrims Prevented from Completing the Pilgrimage · The Statement of Allah عز وجل "...nor commit sin nor dispute unjustly during Hajj..." (V.2:197)
Narrated Abu Huraira:
حَدَّثَنَا مُحَمَّدُ بْنُ يُوسُفَ ، حَدَّثَنَا سُفْيَانُ ، عَنْ مَنْصُورٍ ، عَنْ أَبِي حَازِمٍ ، عَنْ أَبِي هُرَيْرَةَ ـ رضى الله عنه ـ قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " مَنْ حَجَّ هَذَا الْبَيْتَ، فَلَمْ يَرْفُثْ، وَلَمْ يَفْسُقْ، رَجَعَ كَيَوْمِ وَلَدَتْهُ أُمُّهُ " .
The Prophet (ﷺ) 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 newborn child, (just delivered by his mother).