19. Muhammad ibn Yahya has narrated from Ahmad ibn Muhammad from certain persons of our people from al-Hassan ibn Ali from Ali ibn abu Hamzah from his father from abu Basir who has said the following: “I once asked abu ‘Abd Allah , about the case of a people who send their trained dogs to hunt and who mention the name of Allah. When the dogs go, a stray dog joins them and the dogs jointly hunt. He (the Imam) said, ‘Do not use it for food because you do not know if the trained ones have hunted it or the one without training.’”