The Prophet ﷺ was neither obscene nor one who engaged in obscene speech, and he used to say, "The best among you are those with the finest character."
لم يكن النبي ﷺ فاحشا ولا متفحشا، وكان يقول: إن من خياركم أحسنكم أخلاقا.
Bukhari narrated it in Manaqib (3559) and Muslim in Fadail (68:2321), both through Amash, from Abu Waail Shaqiq bin Salama, from Masruq, from Abdullah bin Amr, who said, and then he mentioned it.