《水经注·卷二十五》
孔夫子床前有石砚一枚，制作很简朴 据说是他生时常用之物。
夫子床前，有石砚一枚，作甚朴，云平生时物也。
In front of Confucius' bed there is a stone inkstone, which is very simple in construction. It is said to be something he used when he was born.