Sahih al-Bukhari 6120
Sahih al-Bukhari · Book 78: Good Manners and Form (Al-Adab) · "And if you do not feel ashamed, then do whatever you like."
Narrated Abu Mas`ud:
حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ ، حَدَّثَنَا زُهَيْرٌ ، حَدَّثَنَا مَنْصُورٌ ، عَنْ رِبْعِيِّ بْنِ حِرَاشٍ ، حَدَّثَنَا أَبُو مَسْعُودٍ ، قَالَ قَالَ النَّبِيُّ صلى الله عليه وسلم " إِنَّ مِمَّا أَدْرَكَ النَّاسُ مِنْ كَلاَمِ النُّبُوَّةِ الأُولَى إِذَا لَمْ تَسْتَحِي فَاصْنَعْ مَا شِئْتَ " .
The Prophet (ﷺ) said, 'One of the sayings of the early Prophets which the people have got is: If you don't feel ashamed (from Haya': pious shyness from committing religeous indiscretions) do whatever you like." (See Hadith No 690, 691, Vol 4)