Jami` at-Tirmidhi 1977
جامع الترمذي#1977Sahihحَدَّثَنَا مُحَمَّدُ بْنُ يَحْيَى الأَزْدِيُّ الْبَصْرِيُّ، حَدَّثَنَا مُحَمَّدُ بْنُ سَابِقٍ، عَنْ إِسْرَائِيلَ، عَنِ الأَعْمَشِ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " لَيْسَ الْمُؤْمِنُ بِالطَّعَّانِ وَلاَ اللَّعَّانِ وَلاَ الْفَاحِشِ وَلاَ الْبَذِيءِ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ غَرِيبٌ وَقَدْ رُوِيَ عَنْ عَبْدِ اللَّهِ مِنْ غَيْرِ هَذَا الْوَجْهِ .
Abdullah narrated that the Messenger of Allah said:"The believer does not insult the honor of others, nor curse, nor commit Fahishah, nor is he foul
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 27:83