What was the custom started by 'Amr bin 'Amir bin Luhai Al-Khuza`i that the Prophet Muhammad (peace be upon him) saw him being punished for in the Fire?
 Narrated Sa`id bin Al-Musaiyab:                     Al-Bahira was an animal whose milk was spared for the idols and other dieties, and so nobody was allowed to milk it. As-Saiba was an animal which they (i.e infidels) used to set free in the names of their gods so that it would not be used for carrying anything. Abu Huraira said, "The Prophet said, 'I saw `Amr bin 'Amir bin Luhai Al-Khuza`i dragging his intestines in the (Hell) Fire, for he was the first man who started the custom of releasing animals (for the sake of false gods).' "