It is narrated from Hazrat Anas (may Allah be pleased with him) that once three birds were brought to the Prophet (peace and blessings be upon him) as a gift. The Prophet (peace and blessings be upon him) gave one of the birds to one of his maidservants. The next day, she presented the same bird to the Prophet (peace and blessings be upon him), so the Prophet (peace and blessings be upon him) said, "Did I not forbid you from saving anything for the next day? The sustenance for each day is given by Allah Himself."