Narrated Anas ibn Malik: The Messenger of Allah ﷺ drank some milk and he did not rinse his mouth nor did he perform ablution, and he offered the prayer.
Hadith Referenceسنن ابي داود / كتاب الطهارة / 197
Hadith Gradingالألبانی:حسن | زبیر علی زئی:إسناده حسن, وحسنه الحافظ ابن حجر في فتح الباري: 1/ 313
Hadith Takhrij« تفرد به أبو داود، (تحفة الأشراف: 258) (حسن) »
Rinsing the mouth (madmadah) after drinking milk is also permissible, as has been mentioned in the previous hadith 196, but if one does not rinse the mouth, it is still permissible.
Explanation & Benefits
Shaykh Umar Farooq Saeedi
Benefits and Issues: It is recommended (mustahabb) and superior to rinse the mouth after drinking milk; however, if one does not do so, it is still permissible.
Source: Sunan Abu Dawood – Commentary by Shaykh Umar Farooq Saeedi, Page: 197