《晋书·志·第十一章》
至于孝章，不用尊号显赫买贵人，而是多送金银宝物钱币丝帛，逭并不是做儿子不尽孝道，是因为圣人典章不能逾越。
爰逮孝章，不上贾贵人以尊号，而厚其金宝币帛，非子道之不至也，盖圣典不可逾也。
As for filial piety, don't use honorific titles to show off wealth and honor, but give more gold and silver treasures, money and silk. Yao is not a disobedient son because he did not, but because the canons of saints cannot be exceeded.