when a person asked him, 'I taught my son this book, so what shall I make him work as?' replied, may Allah forgive your father, hand him over to any occupation, but [whatever you do] do not hand him over to five people: Do not give him to a sayya', nor a goldsmith, nor a butcher, nor a wheat-seller, and nor a slave trader.' So he asked, ?O Messenger of Allah (SAWA), what is a sayya'?' He replied, 'One who sells shrouds for the dead, wishing death for the people of my community, and indeed I love the births of my community more than all that the sun shines on. As for the goldsmith, he deals with the cheating of my community. The butcher is one who slaughters such that mercy is erased from his heart. The wheatseller monopolizes the food of my community, and it is more liked by me for a servant to meet Allah as a thief than to meet Him having a monopoly of food for forty days. As for the slave trader, Gabriel (AS) came to me and said, ?O Muhammad, the most evil of your community are those who sell people.'