《宋书·志·卷二十二》
德行积累最终必光大，小心履霜自可越过危险踏上坚冰，神明之道是顺应自然，黄河大海也会冻凝，爱、禹统领百官时，丛元、八凯一类的贤臣依次晋升。
积渐终光大，履霜致坚冰。神明道自然，河海犹可凝。舜禹统百揆，元凯以次升。
Your accumulated virtues will certainly be glorious eventually. Be careful while you tread on the thin ice, as you can cross the danger and step onto the solid ice. The divine way is to follow nature, and even the Yellow River and the sea will freeze. When Di and Yu were leading hundreds of officials, worthy subjects like Cong Yuan and Eight Kai were promoted one after another.