1. A number of our people have narrated from Ahmad ibn Muhammad ibn ‘Isa from Mu‘awiyah ibn Hakim from Muhammad ibn Hubab al-Jallab who has said the following: “I once asked abu al-Hassan , about the case of a man who bought one hundred sheep; if so and so many of them were changed. He (the Imam) said,

‘It is not permissible and it is not lawful. 5 ”