حَدَّثَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ السَّوَّاقُ، حَدَّثَنَا الضَّحَّاكُ بْنُ مَخْلَدٍ، حَدَّثَنَا زَمْعَةُ بْنُ صَالِحٍ، عَنِ ابْنِ شِهَابٍ، عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ حَلَبَ رَسُولُ اللَّهِ ـ صلى الله عليه وسلم ـ شَاةً وَشَرِبَ مِنْ لَبَنِهَا ثُمَّ دَعَا بِمَاءٍ فَمَضْمَضَ فَاهُ وَقَالَ ‏"‏ إِنَّ لَهُ دَسَمًا ‏"‏ ‏.‏

It was narrated that Anas bin Malik said: "The Messenger of Allah milked a sheep and drank some of its milk, then he called for water and rinsed his mouth and said: 'It has some greasiness in it.'" Translation Not Available

Book Ref: Sunan Ibn Majah Book 1 Hadith 501
Web Ref:  Sunan Ibn Majah Vol 1 Book 1 Hadith 501