Sahih al-Bukhari 1820Book 27, Hadith 15
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).