I was walking with Thibit al-Bunani that he happened to pass by children and he greeted them. And Thibit reported that he walked with Anas and he happened to pass by children and he greeted them. and Anas reported that he walked with Allah's Apostle (may peace be upon. him) and he happened, to pass by children and he greeted them. (Using translation from Muslim 2168c)  

كُنْتُ أَمْشِي مَعَ ثَابِتٍ الْبُنَانِيِّ فَمَرَّ بِصِبْيَانٍ فَسَلَّمَ عَلَيْهِمْ وَحَدَّثَ ثَابِتٌ أَنَّهُ كَانَ مَعَ أَنَسٍ فَمَرَّ بِصِبْيَانٍ فَسَلَّمَ عَلَيْهِمْ وَحَدَّثَ أَنَسٌ أَنَّهُ «كَانَ مَعَ النَّبِيِّ ﷺ فَمَرَّ بِصِبْيَانٍ فَسَلَّمَ عَلَيْهِمْ»