The Statement of Allah: "Say (O Muhammad ﷺ): '(But) the things that my Lord has indeed forbidden are Al-Fawãhish (great evil sins, every kind of unlawful sexual intercourse) whether committed openly or secretly."' (V.7:33) Sahih al-Bukhari 4637

Arabic hadith text
حَدَّثَنَا سُلَيْمَانُ بْنُ حَرْبٍ، حَدَّثَنَا شُعْبَةُ، عَنْ عَمْرِو بْنِ مُرَّةَ، عَنْ أَبِي وَائِلٍ، عَنْ عَبْدِ اللَّهِ ـ رضى الله عنه ـ قَالَ قُلْتُ أَنْتَ سَمِعْتَ هَذَا مِنْ عَبْدِ اللَّهِ قَالَ نَعَمْ، وَرَفَعَهُ‏.‏ قَالَ ‏"‏لاَ أَحَدَ أَغْيَرُ مِنَ اللَّهِ، فَلِذَلِكَ حَرَّمَ الْفَوَاحِشَ مَا ظَهَرَ مِنْهَا وَمَا بَطَنَ، وَلاَ أَحَدَ أَحَبُّ إِلَيْهِ الْمِدْحَةُ مِنَ اللَّهِ، فَلِذَلِكَ مَدَحَ نَفْسَهُ ‏"
Translation
Narrated `Abdullah bin Mas`ud

Allah's Messenger (ﷺ) said, "None has more sense of ghaira than Allah, and for this He has forbidden shameful sins whether committed openly or secretly, and none loves to be praised more than Allah does, and this is why He Praises Himself."