《旧唐书·列传·卷一百三十八》
弘智阐发畅叙经义的通达幽微之言，备陈天子、诸侯、卿大夫、士人、庶人等五种人的孝行。
弘智演暢微言，备陈五孝。
Hongzhi expounded on the profound and subtle words of the scriptures, and provided a detailed account of the filial piety of the five types of people: the Son of Heaven, the feudal lords, the high-ranking officials, the scholars, and the common people.