Muhammad bin Sirin said :
"Whenever Anas bin Malik finished narrating a Hadith from the Messenger of Allah (ﷺ), he would say, 'Or as the Messenger of Allah (ﷺ) said.'" (ID)
English reference (ID): Vol. 1, Book 1, Hadith 24 (ID)
Arabic reference (ID): Book 1, Hadith 25 (ID)