Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates that the Noble Prophet (peace and blessings be upon him) said:“Do not meet riders (traders) outside the market to buy their goods, and do not artificially raise prices, and a townsman should not sell on behalf of a villager. And no person should make a deal over his brother’s deal, and no person should send a marriage proposal over his brother’s proposal.”