《太平广记·卷十四·神仙十四》
水装满后，葫芦忽然有一百斤重，李筌拿不起来，葫芦就沉到泉里去了。
水既满矣，瓠忽重百余斤，力不能制，而沉泉中。
Once the water was filled up, the gourd suddenly weighed a hundred kilograms. Li Quan could not lift it up, and the gourd sank into the spring.