´It was narrated that Umm Salamah, the wife of the Prophet, said:` "The Messenger of Allah said: 'If you drink milk, then rinse your mouths, for there is some greasiness in it.'"
Hadith Referenceسنن ابن ماجه / كتاب الطهارة وسننها / 499
Hadith Gradingالألبانی:حسن صحيح | زبیر علی زئی:إسناده حسن
´'Abdul-Muhaimin bin 'Abbas bin Sahl bin Sa'd As-Sa'di narraed from his father, from his grandfather, that:` The Messenger of Allah said: "Rinse your mouths after drinking milk, for it has some greasiness in it."
Hadith Referenceسنن ابن ماجه / كتاب الطهارة وسننها / 500
´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.'"
Hadith Referenceسنن ابن ماجه / كتاب الطهارة وسننها / 501
Hadith Gradingالألبانی:ضعيف | زبیر علی زئی:ضعيف, إسناده ضعيف, زمعة بن صالح: ضعيف وضعفه الجمهور كما قال البوصيري, انوار الصحيفه، صفحه نمبر 395