´It was narrated that Abu Hurairah said:` "The Messenger of Allah forbade meeting (the traders on the way) a Muhajhir selling for a Bedouin, keeping the milk in the udder of an animal (so as to increase its price), artificially inflating prices, a man to urge the cancellation of sale already agreed upon and a woman to ask that her sister (in faith) be divorced."
Hadith Referenceسنن نسائي / كتاب البيوع / 4496
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه