It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Noble Prophet (peace and blessings be upon him) forbade meeting traders before they reach the market and from deceptive sales, and that none of you should sell over the sale of his brother. And when the Noble Prophet (peace and blessings be upon him) was in a hurry during travel, he would perform a symbolic joining (jam‘ suri) between Maghrib and Isha prayers.