It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Do not go out (beyond the town) to meet the trading caravans for the purpose of buying and selling; none of you should sell over the sale of another; do not make artificial bids (to raise the price deceptively); a town-dweller should not sell the goods of a desert-dweller; and do not hold back the milk in the udders of camels and goats (so that they appear to give more milk). Whoever buys such an animal after that has the better of two options after milking it: if he is pleased with it, he keeps it, and if he is displeased with it, he returns it and also gives a sa' of dates (in place of the milk used)."
Hadith Referenceمسند أبي يعلى الموصلي / تابع مسند أبي هريرة رضي الله عنه / 6345
Hadith Gradingمحدثین:إسناده ضعيف
Hadith Takhrij«حکم الحدیث مسند ابی یعلی محققاً تنسیق حسين سليم أسد - مکتبہ شاملہ :قال حسين سليم أسد: إسناده ضعيف . » «قال سعيد بن محمد السناري: صحيح: مضى الكلام عليه [برقم 6049]» «أخرجه البخاري فى (صحيحه) برقم: 2150، ومسلم فى (صحيحه) برقم: 1515، وأبو يعلى فى (مسنده) برقم: 6345، مسند ابویعلیٰ ترقیم الاثری: 6315»