《资治通鉴·晋纪·晋纪四》
淮南相刘颂上疏说： 陛下由于刑法禁令宽松放任，想改变这种状况，但是这种局面是平时日积月累形成的，不可能一下子就能用公正的标准治理下民，这确实要等到时势所宜的机会。
淮南相刘颂上疏曰： 陛下以法禁宽纵，积之有素，未可一旦直绳御下，此诚时宜也。
Liu Song, Minister of Huainan, submitted a memorial which said: Your majesty intended to rectify the situation because the laws and regulations were too lenient, but this is a situation that has been accumulating day by day, and it is impossible to administer the people with justice all at once; it is truly necessary to choose the right moment.