Besides...

Besides, if a permissible use of Najisul Ayn is possible, like, excrement and faeces being converted to manure or fertilisers, its transaction is permitted, but as a precaution, such sale and purchase should be avoided. (ii) Sale and purchase of usurped property. (iii) As a precaution, it is haraam to sell and purchase those things which are not usually considered to be merchandise, like, the sale and purchase of wild beasts, if it does not involve any substantial gain.

(iv) Any transaction which involves interest. (v) Sale and purchase of those things which are usually utilised for haraam acts only, like, gambling tools. (vi) A transaction which involves fraud or adulteration, like, when one commodity is mixed with another, and it is not possible to detect the adulteration, nor does the seller inform the buyer about it, like, to sell ghee mixed with fat. This act is called cheating (ghish) or adulteration.

The holy Prophet of Islam (s.a.w.a) said: “If a person makes a deceitful transaction with the Muslims, or puts them to a loss, or cheats them, he is not one of my followers. And when a person cheats his fellow Muslim (i.e.

sells him an adulterated commodity), Allah deprives him of Blessings in his livelihood, closes the means of his earnings, and leaves him to himself.” Issue 2064: * There is no harm in selling a Clean (tahir/pak) thing which has become najis, but can be made Clean (tahir/pak) by washing it. And if it cannot be made Clean (tahir/pak) with water, and its use does not require it to be Clean (tahir/pak), like some oils, its sale is permissible.

In fact, even if its use requires it to be Clean (tahir/pak), if it has substantial halal benefit, its sale is permitted. Issue 2065: * If a person wants to sell a najis thing, he should inform the buyer about it, because by not telling him, he might do something contrary to the rule of Shariah.

For example, if he sells him najis water which the buyer may require for Wudhu or Ghusl, and to offer his obligatory prayers, or he sells him something which he uses as food or drink - in all such cases, the seller should inform the buyer. Of course, if the seller knows that it is no use informing the buyer who is careless, and does not care about Taharat or Najasat, then it is not necessary to inform.

Issue 2066: * Although the purchase and sale of najis medicines for internal or external use is permissible, the buyer should be informed about it in situations explained in the foregoing rule no. 2065.