Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) forbade going out of the town to meet trade caravans, a town-dweller selling on behalf of a Bedouin, a woman asking for her sister's divorce, a man bargaining over his brother's bargain, selling animals after holding back their milk, and raising the price (by false bidding).
(b) Abd al-Rahman says: "nuhiya" (it was forbidden), Adam says: "nuhina" (we were forbidden), and Hajjaj bin Minhal mentions the word "nuhiya" (it was forbidden).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10706