Sunan Abu Dawud 196
Purification (Kitab Al-Taharah)
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا اللَّيْثُ، عَنْ عَقِيلٍ، عَنِ الزُّهْرِيِّ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم شَرِبَ لَبَنًا فَدَعَا بِمَاءٍ فَتَمَضْمَضَ ثُمَّ قَالَ " إِنَّ لَهُ دَسَمًا " .
‘Abd Allah b.’Abbas said that the Prophet (peace be upon him) drank some milk and then rinsed his mouth saying :it contains greasiness
Grading: Al-Albani: Sahih · Muhammad Muhyi Al-Din Abdul Hamid: Sahih · Shuaib Al Arnaut: Sahih · Zubair Ali Zai: Sahih Bukhari (211) Sahih Muslim (358)
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.