A Promise on currency exchange [426] - For example, if two individuals agree to exchange currencies after a month, having specified the type of currency and its price, and that possession will take place when the term expires. Another scenario is when a person takes gold or silver to consult about its purchase; for instance, a man approaches a gold or silver seller, takes the item to consult his family or others, and then purchases it afterward. is permissible if it is non-binding; this is the opinion of some Maliki scholars [427] - "Majawhib Al-Jalil" by Al-Hattab (6/139); "Manh Al-Jalil" by Al-Ulayesh (4/496); and refer to "Al-Tawdhih" by Khalil ibn Ishaq (5/258). , and it was chosen by Ibn Hazm [428] - Ibn Hazm stated: "The agreement in the sale of gold for gold or silver for silver, and in the exchange of the four types among themselves, is permissible, whether they subsequently engage in the exchange or not, as the agreement itself is not a sale."     Source: "Al-Muhalla" (7/465). , the Permanent Committee [429] - In the Fatwas of the Permanent Committee, the following question was posed: "What is the ruling on buying gold with the intent to consult?" That is, a man comes and buys gold on the condition that he consults his family, and he may not pay the price. I hope you can kindly clarify this matter. The response was: "The sale of gold for silver or its equivalent is not permissible except with hand-to-hand exchange. However, if he takes the item made of gold or silver to consult with his family or others, and then buys it thereafter in a lawful manner, or leaves it; there is no harm in that."   Source: "Fatwas of the Permanent Committee" (13/480). , and Ibn Uthaymeen [430] -Ibn ʿUthaymīn was asked about the ruling regarding someone who buys a gold product and then stipulates that if it is unsuitable, they can return it to the store for exchange or refund. What is the lawful procedure in such a case, especially when some people live far from the city, making it difficult to return to the store on the same day or the next?    He replied: "The best and most proper course in such cases is for the person to take the gold item before the contract is finalized and take it to their family; if it is suitable, they can return to the store, sell it with the owner, and then buy anew. This is the best option."   Source: "Fatāwā Islāmiyyah" (2/355) ; this is because the agreement on currency exchange is not a sale but merely a promise to sell [431] -See: "Al-Muḥallā" by Ibn Ḥazm (7/465) .