Sayyiduna Ibn Abbas (may Allah be pleased with them both) says: In the time of the Messenger of Allah (peace and blessings be upon him), prices and rates increased greatly. The Companions (may Allah be pleased with them) said: O Messenger of Allah! Fix prices for us. So the Prophet (peace and blessings be upon him) said: "Allah Himself is the One Who fixes prices, He controls everything and He opens (things) as well, and I hope that when I meet Allah, there will be no injustice or excess upon me for which anyone would demand from me regarding his honor or wealth."