Arabic Text
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، عَنْ عُقَيْلٍ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم شَرِبَ لَبَنًا ثُمَّ دَعَا بِمَاءٍ فَتَمَضْمَضَ وَقَالَ " إِنَّ لَهُ دَسَمًا " .
English Translation
Ibn Abbas reported: The Apostle (ﷺ) took milk and then called for water and rinsed (his mouth) and said: It contains greasiness.
This hadith is from Sahih Muslim, one of the most rigorously authenticated collections in Islamic scholarship. No editorial opinion is added.