Its sale is not permissible, even though it is allowed to keep one in the house; selling it, however, is forbidden.
As for the dog, it is not permissible to keep it in the house, for the angels do not enter a house in which there is a dog or an image, and it is likewise forbidden to sell it.
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The Upper Limit of Profit in Trade
Question: Is there a specific percentage set by the Sacred Law for profit in commerce, or are there no prescribed limits—even if the profit reaches double or twice the original price?
Answer: There is no ceiling on profit in trade, because Allah has permitted buying and selling without tying them to a particular figure: “ … unless it be a trade conducted by mutual consent among you” (An-Nisāʾ 4:29) and “O you who believe, when you contract a debt for a stated term, write it down” (Al-Baqarah 2:282). No limit has been fixed on profit, provided that the gain is realised through sound and lawful means.
But if the transaction departs from what is correct and lawful—for example, if the gain is riba-based, an interest-bearing increase, or if it exploits the need of a poor or distressed person—then it is not permissible to take advantage of his predicament or to impose exorbitant surcharges on him because he is in dire need.
Question: What if the profit reaches twice the cost, or even double that?
Answer: No specific limit exists—especially when the large profit is due to higher costs and inflated market prices, there is no harm in it. Nevertheless, as we have stated, a Muslim should show leniency toward his fellow Muslim and should not overburden him with debt or price, particularly if