ENOfficial
Suhaib reported God’s messenger as saying, “He who treats what the Qur’ān prohibits as permissible does not believe in it.” Tirmidhī transmitted it, but said this is a tradition whose isnād is not strong.
Source: sunnah.com
Other translations
Arabic
وَعَنْ صُهَيْبٍ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «مَا آمَنَ بِالْقُرْآنِ مَنِ اسْتَحَلَّ مَحَارِمَهُ» . رَوَاهُ التِّرْمِذِيُّ وَقَالَ: هَذَا حَدِيثٌ لَيْسَ إِسْنَادُهُ بِالْقَوِيّ
sunnah.com