Issue 1032: It is obligatory for a businessman to learn the necessary rules of trading.

Issue 1033: It is illegal to sell or rent out one’s house or anything else to be used for an illegal purpose.

Issue 1034: Trading, keeping, writing, reading and teaching misleading books are forbidden, except for the researchers who would do such things in order to answer the inquiries.

Issue 1035: It will be illegal to sell something which has been mixed with something else if the latter is not distinguishable and the seller does not tell the buyer about it (this is referred to as fraud and adulteration); for instance, if milk is mixed with water and the seller does not tell the buyer about it, it will be illegal to sell the milk.

Issue 1036: While trading something, the qualities and specifications of that thing must be made known to the buyer, but it is not necessary to tell them about those qualities which are of no influence on their willingness to buy that thing.

Issue 1037: It is illegal and void to trade intoxicants and the things which are utilized for illegal purposes.

Issue 1038: It is recommended that the seller should treat all their customers in the same way regarding the price of the things and should not be rigid and inflexible regarding the prices, and they should accept to cancel the transactions.

Issue 1039: Swearing to somebody or on something while trading is considered as disapproved if it is true, but it will be illegal if it is not true.