Sayyiduna Anas bin Malik (may Allah be pleased with him) narrates this statement of the Noble Prophet (peace and blessings be upon him): "That thing which is weighed should be equal when both types are the same, and when something is measured, it should also be the same way. But when the types on both sides are different, then there is no harm in it." This narration is also transmitted from Sayyiduna Anas (may Allah be pleased with him) from the Noble Prophet (peace and blessings be upon him) through other chains of transmission.