Sahih al-Bukhari, Book 82, Hadith 18 (In-Book) ⓘ

Narrated Ibn `Abbas: I did not see anything so resembling minor sins as what Abu Huraira said from the Prophet, who said, "Allah has written for the son of Adam his inevitable share of adultery whether he is aware of it or not: The adultery of the eye is the looking (at something which is sinful to look at), and the adultery of the tongue is to utter (what it is unlawful to utter), and the innerself wishes and longs for (adultery) and the private parts turn that into reality or refrain from submitting to the temptation."

حَدَّثَنِي مَحْمُودُ بْنُ غَيْلاَنَ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، أَخْبَرَنَا مَعْمَرٌ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنِ ابْنِ عَبَّاسٍ، قَالَ مَا رَأَيْتُ شَيْئًا أَشْبَهَ بِاللَّمَمِ مِمَّا قَالَ أَبُو هُرَيْرَةَ عَنِ النَّبِيِّ صلى الله عليه وسلم ‏ "‏ إِنَّ اللَّهَ كَتَبَ عَلَى ابْنِ آدَمَ حَظَّهُ مِنَ الزِّنَا، أَدْرَكَ ذَلِكَ لاَ مَحَالَةَ، فَزِنَا الْعَيْنِ النَّظَرُ، وَزِنَا اللِّسَانِ الْمَنْطِقُ، وَالنَّفْسُ تَمَنَّى وَتَشْتَهِي، وَالْفَرْجُ يُصَدِّقُ ذَلِكَ، وَيُكَذِّبُهُ ‏" ‏‏.‏ وَقَالَ شَبَابَةُ حَدَّثَنَا وَرْقَاءُ، عَنِ ابْنِ طَاوُسٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم‏.‏