Sunan an-Nasa'i, Hadith 2627 ⓘ
It was narrated that Abu Hurairah said: "The Messenger of Allah said: 'Whoever performs pilgrimage to this House, and does not Yarfuth (utter any obscenity or commit sin), will go back as (on the day) his nother bore him.'''(sahih)
أَخْبَرَنَا أَبُو عَمَّارٍ الْحُسَيْنُ بْنُ حُرَيْثٍ الْمَرْوَزِيُّ، قَالَ حَدَّثَنَا الْفُضَيْلُ، - وَهُوَ ابْنُ عِيَاضٍ - عَنْ مَنْصُورٍ، عَنْ أَبِي حَازِمٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " مَنْ حَجَّ هَذَا الْبَيْتَ فَلَمْ يَرْفُثْ وَلَمْ يَفْسُقْ رَجَعَ كَمَا وَلَدَتْهُ أُمُّهُ " .
also referenced under: Book 24, Hadith 0 (In-Book) & Volume 3, Book 24, Hadith 2628 (DarusSalam)