It is narrated from Sayyiduna Abu Sa'id Khudri (may Allah be pleased with him) that fresh and juicy dates were brought to the Messenger of Allah (peace and blessings be upon him), while his own dates were of the Barani type and had become dry. Therefore, the Prophet (peace and blessings be upon him) asked: "Where did these dates come from?" The people said: "We exchanged two sa' of our dates for one sa' of these dates." The Prophet (peace and blessings be upon him) said: "This transaction is not correct. First, sell your own dates separately, then fulfill your need for this type with the price you get."