Musannaf Ibn Abi Shayba 28:1064

Waki’ narrated to us, he said: Ibn Abi Dhi’b narrated to us, from Ishaq ibn Yazid al-Hudhali, he said: I said to Sa’id ibn al-Musayyib, "What do you say about wagering on the game of *dahw* (a game involving throwing stones)?" He said, "There is no harm in it."