Anas b. Malik reported that when Allah's Messenger (ﷺ) happened to pass by young boys he would great them.
Sahih Muslim Book 39, Hadith 18
← Previous Hadith 'When you meet the People of the Book." And in the hadith transmitted on the authority of Jarir the words are:" When you meet them," but none amongst the polytheists has been mentioned explicitly by name.

Sahih Muslim Book 39, Hadith 17 Next Hadith → This hadith has been narrated on the authority of Sayyar with the same chain of transmitters.

Sahih Muslim Book 39, Hadith 19