مختصر صحيح مسلم
Mukhtasar Sahih Muslim
Issues of Trade
Do not sell one dinar for two, or one dirham for two.
It is narrated from Sayyiduna Uthman bin Affan (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Do not sell one dinar for two dinars, nor sell one dirham for two dirhams.
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