On the authority of Abu Masood Uqbah bin ’Amr al-Ansaree al-Badree (may Allah be pleased with him) who said:
The Messenger of Allah (peace and blessings of Allah be upon him) said, “Verily, from what was learnt by the people from the speech of the earliest prophecy is: If you feel no shame, then do as you wish.”
It was related by al-Bukhari.
(Imam Nawawi’s Forty Hadith, Hadith no. 20)