the Prophet ﷺ said: “Do not harbor mutual hatred, do not practise najash (artificially inflating prices), do not turn your backs on one another, and do not sever your ties.” The Messenger ﷺ thus prohibited four things:
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Mutual hatred. The Prophet ﷺ forbade it absolutely. Even if you feel dislike toward someone, strive to remove that feeling from your heart. Search for his good qualities so that they erase his shortcomings. The Prophet ﷺ guided us to this when he said: “Let no believing man despise a believing woman; if he is displeased with one trait of hers, he will be pleased with another.” This teaches us to weigh virtues against faults. Some people—God protect us—see only the faults and judge accordingly, forgetting the virtues. Others see only the virtues and forget the faults. Justice lies in considering both and leaning toward pardon, for Allah loves those who forgive. Therefore, whenever you sense hatred toward someone, remind yourself of his merits. Perhaps you have had unpleasant dealings with him, yet he remains a virtuous person who does good and loves righteousness. Recall these merits so that his poor treatment of you is overshadowed by his many good deeds.
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Najash. Najash means raising the price without any intention of buying, merely to drive the price up for the real purchaser. Suppose you see an item offered in the market for one hundred riyals and someone wishes to buy it. You then bid “one hundred and ten” even though you have no desire for the item, aiming only to raise the price on the buyer. This is unlawful and an act of aggression.
However, if you judged the item inexpensive at one hundred