Hadith 17:867
Hafs narrated to us, from Layth, from Tawus, who said: He used to dislike gambling and he would say, "It is from the *maysir* (games of chance)," even the children’s playing with walnuts and knucklebones.
حدثنا حفص عن ليث عن طاوس قال كان يكره القمار ويقول إنه من الميسر حتى لعب الصبيان بالجوز والكعاب