Language:
كتاب المحصر
27  
Pilgrims Prevented from Completing the Pilgrimage
(10)
Chapter: "... Nor commit sin nor dispute unjustly during Hajj ..."
(10)
بَابُ قَوْلِ اللَّهِ عَزَّ وَجَلَّ: {وَلاَ فُسُوقَ وَلاَ جِدَالَ فِي الْحَجِّ}
Sahih al-Bukhari 1820

Narrated Abu Huraira:

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).

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 ‏"‏‏.‏
Reference : Sahih al-Bukhari 1820
In-book reference : Book 27, Hadith 15
USC-MSA web (English) reference : Vol. 3, Book 28, Hadith 46
  (deprecated numbering scheme)