Riyad as-Salihin, Book 6, Hadith 862 (In-Book) ⓘ
Anas (May Allah be pleased with him) reported that he passed by some children and greeted them. Then he said: "Messenger of Allah used to do the same." [Al-Bukhari and Muslim].
عن أنس رضي الله عنه أنه مر على صبيان، فسلم عليهم، وقال: كان رسول الله صلى الله عليه وسلم يفعله” ((متفق عليه))