Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ahmad:8215 –

[Machine] And the Messenger of Allah ﷺ said, "It is written upon the son of Adam a portion of adultery that he will inevitably reach. The eyes commit adultery through looking, and it is supported by the desires and the tongue commits adultery through speech, and the heart desires and the private parts confirm or deny what has occurred."  

أحمد:٨٢١٥ –

وَقَالَ رَسُولُ اللهِ ﷺ كُتِبَ عَلَى ابْنِ آدَمَ نَصِيبٌ مِنَ الزِّنَا أَدْرَكَ لَا مَحَالَةَ فَالْعَيْنُ زِنْيَتُهَا النَّظَرُ وَيُصَدِّقُهَا الْأَعْرَاضُ وَاللِّسَانُ زِنْيَتُهُ الْمَنْطِقُ وَالْقَلْبُ التَّمَنِّي وَالْفَرْجُ يُصَدِّقُ مَا ثَمَّ وَيُكَذِّبُ  

See similar narrations below:

Collected by Abū Dāwūd, Ibn Ḥibbān, Suyūṭī
abudawud:2152 – Muḥammad b. ʿUbayd > Ibn Thawr > Maʿmar > Ibn Ṭāwus from his father > Ibn ʿAbbās > Mā Raʾayt Shayʾ Ashbah Bi-al-Lamam Mimmā > Abū Hurayrah

Ibn ‘Abbas said “I did not see anything more resembling to minor sins than what Abu Hurairah reported from the Prophet ﷺ who said “Allaah has decreed for the children of Adam a share in adultery, he will get it by all means, the adultery of eyes is looking; the adultery of tongue is speaking; the soul desires and has a passion; the private parts confirms or falsifies it.”  

أبو داود:٢١٥٢ – حَدَّثَنَا مُحَمَّدُ بْنُ عُبَيْدٍ حَدَّثَنَا ابْنُ ثَوْرٍ عَنْ مَعْمَرٍ أَخْبَرَنَا ابْنُ طَاوُسٍ عَنْ أَبِيهِ عَنِ ابْنِ عَبَّاسٍ قَالَ

مَا رَأَيْتُ شَيْئًا أَشْبَهَ بِاللَّمَمِ مِمَّا قَالَ أَبُو هُرَيْرَةَ عَنِ النَّبِيِّ ﷺ إِنَّ اللَّهَ كَتَبَ عَلَى ابْنِ آدَمَ حَظَّهُ مِنَ الزِّنَا أَدْرَكَ ذَلِكَ لاَ مَحَالَةَ فَزِنَا الْعَيْنَيْنِ النَّظَرُ وَزِنَا اللِّسَانِ الْمَنْطِقُ وَالنَّفْسُ تَمَنَّى وَتَشْتَهِي وَالْفَرْجُ يُصَدِّقُ ذَلِكَ وَيُكَذِّبُهُ  

ذِكْرُ إِطْلَاقِ اسْمِ الزِّنَى عَلَى الْقَلْبِ إِذَا تَمَنَّى وقُوعَ مَا حُرِّمَ عَلَيْهِ

ibnhibban:4421 – Ibn Qutaybah > Ibn Abū al-Sarī > ʿAbd al-Razzāq > Maʿmar > Hammām b. Munabbih > Abū Hurayrah

[Machine] "And the Messenger of Allah ﷺ said: 'Every son of Adam has a share of fornication, and there is no doubt about it. The eye commits adultery by looking, the tongue commits adultery by speaking, the heart commits adultery by desiring, and the private parts confirm or deny it.'"  

ابن حبّان:٤٤٢١ – أَخْبَرَنَا ابْنُ قُتَيْبَةَ حَدَّثَنَا ابْنُ أَبِي السَّرِيِّ أَخْبَرَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنْ هَمَّامِ بْنِ مُنَبِّهٍ عَنْ أَبِي هُرَيْرَةَ قَالَ

وَقَالَ رَسُولُ اللَّهِ ﷺ «كُلُّ بَنِي آدَمَ لَهُ نَصِيبٌ مِنَ الزِّنَى أَدْرَكَهُ ذَلِكَ لَا مَحَالَةَ فَالْعَيْنُ زِنَاهَا النَّظَرُ وَاللِّسَانُ زِنَاهُ النُّطْقُ وَالْقَلْبُ زِنَاهُ التَّمَنِّي وَالْفَرْجُ يُصَدِّقُ وَيُكَذِّبُ»  

suyuti:4935a –

Ibn ‘Abbas said “I did not see anything more resembling to minor sins than what Abu Hurairah reported from the Prophet ﷺ who said “Allaah has decreed for the children of Adam a share in adultery, he will get it by all means, the adultery of eyes is looking; the adultery of tongue is speaking; the soul desires and has a passion; the private parts confirms or falsifies it.” (Using translation from Abū Dāʾūd 2152)   

السيوطي:٤٩٣٥a –

"إنَّ الله ﷻ كتبَ على ابن آدم حظَّه من الزنى، أدرك ذلك لا مَحَالةَ: فزنى العين النَّظَرُ، وزنى اللسانِ المَنْطِقُ، والنَّفْسُ تَتَمَنَّى وتَشْتَهِي، والفرجُ يُصَدَّق ذَلك أو يكذبهُ".  

[حم] أحمد ، [خ] البخاري [م] مسلم [د] أبو داود عن أبي هريرة