Arabic (Original)
وَبِهَذَا الْإِسْنَادِ عَنْ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُ قَالَ عَلَى كُلِّ نَفْسٍ مِنْ بَنِي آدَمَ كُتِبَ حَظُّهُ مِنْ الزِّنَا أَدْرَكَ ذَلِكَ لَا مَحَالَةَ فَالْعَيْنُ زِنَاهَا النَّظَرُ وَالْآذَانُ زِنَاهَا الِاسْتِمَاعُ وَالْيَدُ زِنَاهَا الْبَطْشُ وَالرِّجْلُ زِنَاهَا الْمَشْيُ وَاللِّسَانُ زِنَاهُ الْكَلَامُ وَالْقَلْبُ يَهْوَى وَيَتَمَنَّى وَيُصَدِّقُ ذَلِكَ وَيُكَذِّبُهُ الْفَرْجُ.
English Translation
With the same chain of narration, the Messenger of Allah (peace be upon him) said: "Upon every soul of the children of Adam, a share of adultery has been decreed, which he will inevitably commit. The adultery of the eyes is looking, the adultery of the ears is listening, the adultery of the hand is striking, the adultery of the feet is walking, and the adultery of the tongue is speech. The heart desires and wishes, and the private parts either confirm or deny that."