Sunan Abi Dawud, Book 41, Hadith 4993 (USC-MSA) ⓘ
Narrated Abdullah ibn Abbas: A desert Arab came to the Prophet and began to speak. Thereupon the Messenger of Allah said: In eloquence there is magic and in poetry there is wisdom.
حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا أَبُو عَوَانَةَ، عَنْ سِمَاكٍ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، قَالَ جَاءَ أَعْرَابِيٌّ إِلَى النَّبِيِّ صلى الله عليه وسلم فَجَعَلَ يَتَكَلَّمُ بِكَلاَمٍ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّ مِنَ الْبَيَانِ سِحْرًا وَإِنَّ مِنَ الشِّعْرِ حُكْمًا " .
also referenced under: Hadith 5011 (DarusSalam) & Hadith 4993 (Hasan)