Language:
كتاب الحدود
86  
Limits and Punishments set by Allah (Hudood)
(19)
Chapter: The superiority of the person who leaves Al-Fawahish
(19)
باب فَضْلِ مَنْ تَرَكَ الْفَوَاحِشَ
Sahih al-Bukhari 6807

Narrated Sahl bin Sa`d:

The Prophet (ﷺ) said, "Whoever guarantees me (the chastity of) what is between his legs (i.e. his private parts), and what is between his jaws (i.e., his tongue), I guarantee him Paradise."

حَدَّثَنَا مُحَمَّدُ بْنُ أَبِي بَكْرٍ، حَدَّثَنَا عُمَرُ بْنُ عَلِيٍّ‏.‏ وَحَدَّثَنِي خَلِيفَةُ، حَدَّثَنَا عُمَرُ بْنُ عَلِيٍّ، حَدَّثَنَا أَبُو حَازِمٍ، عَنْ سَهْلِ بْنِ سَعْدٍ السَّاعِدِيِّ، قَالَ النَّبِيُّ صلى الله عليه وسلم ‏ "‏ مَنْ تَوَكَّلَ لِي مَا بَيْنَ رِجْلَيْهِ وَمَا بَيْنَ لَحْيَيْهِ، تَوَكَّلْتُ لَهُ بِالْجَنَّةِ ‏"‏‏.‏
Reference : Sahih al-Bukhari 6807
In-book reference : Book 86, Hadith 36
USC-MSA web (English) reference : Vol. 8, Book 82, Hadith 799
  (deprecated numbering scheme)