《魏书·列传·卷七十二》
孔门之徒，当初也不明此理，看见皋鱼叹无亲可奉，方才归而养亲。
孔门之徒，初亦未悟，见旱鱼之叹，方归而养亲。
Confucius's disciples also did not understand this at first, and only went back and took care of their parents after seeing Gao Yu lamenting that he had no parents to take care of.