Prophet of Allah,(PBUH)would let children race to him

He, sallallaahu ‘alayhi wa sallam, would make many children from the family of Al-’Abbaas (‘Abdullaah, ‘Ubaydullaah and others) stand in a row and then say to them: “The one who wins running towards me will get such and such.” So they would race and land on his lap and jump on his back, and he, sallallaahu ‘alayhi wa sallam, would start flipping them over and playing with them.1