SHAFAQNA – Imam Ali (AS) said: Oâ€™ traders, first learn about Sharia Laws regarding trade and then engage in trading . It is also narrated from Imam Sadeq (AS) who said: Whoever wants to engage in trade must learn the rules of religion in order to recognise between Halal and Haram. The one who does not learn these rules and engage in trade will get into doubts .
 Alkafi, Vol. 5, Page 150, Hadith Number 1.
 Wasaelul Shia, Vol. 12, Page 283, Hadith Number 4.