《梁书·列传·卷五十》
从前士德怀念旧友，思念之情萦绕数日；王辅嗣想念友人，忧思不断长达一旬。
昔士德怀顾，恋兴数日；辅嗣思友，情劳一旬。
In the past, Shi De remembered an old friend, and missed him for many days; Wang Fusi missed a friend, thinking of him incessantly for ten days.