Asking Permission
Ṣaḥīḥ al-Bukhārī 6243
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 كُلَّهُ وَيُكَذِّبُهُ
inna-Llāh kataba ʿalā ābni ādama ḥaẓẓah mina az-zinā, adraka dhalika lā maḥālaha, fazinā al-ʿayni an-naẓaru, wazinā al-lisāni al-manṭiqu, wa-an-nafsu tamannā watashtahī, wa-l-farju yuṣaddiqu dhalika kullah wayukadhibuhu
Transliteration generated from the Arabic vowel marks
The full narration
Narrated Ibn `Abbas:I have not seen a thing resembling 'lamam' (minor sins) than what Abu Huraira 'narrated from the Prophet who said "Allah has written for Adam's son his share of adultery which he commits inevitably. The adultery of the eyes is the sight (to gaze at a forbidden thing), the adultery of the tongue is the talk, and the inner self wishes and desires and the private parts testify all this or deny it
Source
Ṣaḥīḥ al-Bukhārī · 6243