Narrated Ibn 'Abbas: that the Prophet (ﷺ) said: "Beware of narrating from me except what I taught you, for whoever lies about me on purpose, then let him take his seat in the Fire. And whoever says (something) about the Qur'an according to his (own) opinion, then let him take his seat in the Fire."
Source: sunnah.com
Other translations
Arabic
حَدَّثَنَا سُفْيَانُ بْنُ وَكِيعٍ، حَدَّثَنَا سُوَيْدُ بْنُ عَمْرٍو الْكَلْبِيُّ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ عَبْدِ الأَعْلَى، عَنْ سَعِيدِ بْنِ جُبَيْرٍ، عَنِ ابْنِ عَبَّاسٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ " اتَّقُوا الْحَدِيثَ عَنِّي إِلاَّ مَا عَلِمْتُمْ فَمَنْ كَذَبَ عَلَىَّ مُتَعَمِّدًا فَلْيَتَبَوَّأْ مَقْعَدَهُ مِنَ النَّارِ وَمَنْ قَالَ فِي الْقُرْآنِ بِرَأْيِهِ فَلْيَتَبَوَّأْ مَقْعَدَهُ مِنَ النَّارِ " . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ .
sunnah.com