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Shiavault - a Vault of Shia Islamic Books Islamic Laws Transactions (Part I of III) Rules Regarding Purchase and Sale Issue 2059: * It is recommended for a business man to learn the rules of daily transactions. In fact, if due to ignorance, he may necessarily contradict the laws of Shariah, then it is obligatory upon him to learn.
Imam Ja'far Sadiq (A.S.) is reported to have said: “A person who wishes to engage in business, should learn its rules and laws, and if he makes any transaction without learning them, he may suffer because of entering into a void or doubtful transactions”.
Issue 2060: * If a person is not aware, because of ignorance about the relevant laws, whether the transaction made by him is valid or void, he cannot have any discretion over the property which he has acquired, unless he knows that the other party has no objection to it. In any case, the transaction remains void. Issue 2061: If a person does not possess any wealth, and it is obligatory on him to maintain his dependents, like, his wife and children, he should start earning.
Moreover, to earn is recommended for Mustahab acts like providing better means of livelihood to one's family, and helping the poor persons. Mustahab Acts * The following are Mustahab in connection with sale and purchase: (i) One should not discriminate between various buyers while charging for the commodities, except in the case of poor people. (ii) One should not be adamant about the prices, unless one feels that one is being duped or cheated.
(iii) One should give a little more of the thing one sells, and should take a little less of the thing which one buys. (iv) If the buyer regrets having purchased something, and wishes to return it, the seller should accept it back. Makrooh Transactions Issue 2062: * The following are Makrooh transactions: (i) To sell the land, except when one wishes to purchase another land with its proceeds. (ii) To be a butcher. (iii) To make shroud selling one's vocation.
(iv) To enter into transaction with people of low character. (v) To transact a deal between the Fajr prayers and sunrise. (vi) To make it one's vocation to buy or sell wheat and barley, or other similar commodities. (vii) To interfere in a deal being carried out by a Muslim, and make one's own offer.
Haraam Transactions Issue 2063: * There are many Haraam deals and businesses, some are mentioned below: (i) To sale and purchase intoxicating beverages, non-hunting dogs, pigs, an unslaughtered carcass (as a precaution).