Arabic (Original)
وَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ كُتِبَ عَلَى ابْنِ آدَمَ نَصِيبُهُ مِنْ الزِّنَا أَدْرَكَ لَا مَحَالَةَ فَالْعَيْنُ زِنْيَتُهَا النَّظَرُ وَيُصَدِّقُهَا الْأَعْرَاضُ وَاللِّسَانُ زِنْيَتُهُ النُّطْقُ وَالْقَلْبُ التَّمَنِّي وَالْفَرْجُ يُصَدِّقُ مَا ثَمَّ وَيُكَذِّبُ.
English Translation
The Messenger of Allah (peace be upon him) said: 'The share of adultery has been decreed upon the son of Adam, which he will inevitably encounter. The adultery of the eye is the gaze, and the limbs confirm or deny it. The adultery of the tongue is speech. The adultery of the heart is desire. And the private parts either confirm all of that or deny it.'