Sahih al-Bukhari 3282
Narrated Sulaiman bin Surd:
While I was sitting in the company of the Prophet, two men abused each other and the face of one of 
them became red with anger, and his jugular veins swelled (i.e. he became furious). On that the 
Prophet said, "I know a word, the saying of which will cause him to relax, if he does say it. If he says: 
'I seek Refuge with Allah from Satan.' then all is anger will go away." Some body said to him, "The 
Prophet has said, 'Seek refuge with Allah from Satan."' The angry man said, "Am I mad?"
حَدَّثَنَا عَبْدَانُ، عَنْ أَبِي حَمْزَةَ، عَنِ الأَعْمَشِ، عَنْ عَدِيِّ بْنِ ثَابِتٍ، عَنْ سُلَيْمَانَ بْنِ صُرَدٍ، قَالَ كُنْتُ جَالِسًا مَعَ النَّبِيِّ صلى الله عليه وسلم وَرَجُلاَنِ يَسْتَبَّانِ، فَأَحَدُهُمَا احْمَرَّ وَجْهُهُ وَانْتَفَخَتْ أَوْدَاجُهُ، فَقَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ إِنِّي لأَعْلَمُ كَلِمَةً لَوْ قَالَهَا ذَهَبَ عَنْهُ مَا يَجِدُ، لَوْ قَالَ أَعُوذُ بِاللَّهِ مِنَ الشَّيْطَانِ‏.‏ ذَهَبَ عَنْهُ مَا يَجِدُ ‏"‏‏.‏ فَقَالُوا لَهُ إِنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ ‏"‏ تَعَوَّذْ بِاللَّهِ مِنَ الشَّيْطَانِ ‏"‏‏.‏ فَقَالَ وَهَلْ بِي جُنُونٌ