حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا اللَّيْثُ، عَنْ عَقِيلٍ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلمشَرِبَ لَبَنًا فَدَعَا بِمَاءٍ فَتَمَضْمَضَ ثُمَّ قَالَ ‏"‏ إِنَّ لَهُ دَسَمًا ‏"
Translation
‘Abd Allah b.’Abbas said that the Prophet (peace be upon him) drank some milk and then rinsed his mouth saying

Qutaybah ibn Sa'id narrated to us: Al-Layth narrated to us, from 'Aqil, from al-Zuhri, from 'Ubaydullah ibn 'Abdullah, from Ibn 'Abbas, that the Prophet, may Allah bless him and grant him peace, drank milk, then asked for water and rinsed his mouth, and then said: "Indeed, it contains fatness (or greasiness)."