حَدَّثَنِي مَالِكٌ، عَنْ زَيْدِ بْنِ أَسْلَمَ، عَنْ عَبْدِ اللَّهِ بْنِ عُمَرَ، أَنَّهُ قَالَ قَدِمَ رَجُلاَنِ مِنَ الْمَشْرِقِ فَخَطَبَا فَعَجِبَ النَّاسُ لِبَيَانِهِمَا فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّ مِنَ الْبَيَانِ لَسِحْرًا " . أَوْ قَالَ " إِنَّ بَعْضَ الْبَيَانِ لَسِحْرٌ " .
Malik related to me from Zayd ibn Aslam that Abdullah ibn Umarsaid, "Two men from the east stood up and spoke, and people wereamazed at their eloquence. The Messenger of Allah, may Allah bless himand grant him peace, said, 'Some eloquence is sorcery,' or he said,'Part of eloquence is sorcery.' " Translation Not Available
Book Ref: Muwatta Imam Malik Book 56 Hadith 1820
Web Ref: Muwatta Imam Malik Book 56 Hadith 7