佛祖歷代通載 16.39

16.39

（丁卯）　宣宗忱（憲宗第十三子。始封光王。讓位與姪文宗武宗後武宗不道捶亡沈於宮廁。宦者仇公武潛收救之。俾髠髮為僧。後復受江陵少尹。武宗疾大漸。立光王為皇太叔即位于柩前。帝以流落民間。備知稼穡勤于庶政。視前昏暴。廣興佛寺。后年五十崩咸寧殿。葬貞陵。在位十三年）改元大中。

(Dingmao [847 CE]) Emperor Xuanzong, named Chen (the thirteenth son of Xianzong. He was initially enfeoffed as Prince of Guang. He yielded the throne to his nephews Wenzong and Wuzong. Later, because Wuzong was unprincipled, he beat him nearly to death and had him thrown into the palace latrine. The eunuch Qiu Gongwu secretly rescued him and had his head shaved to become a monk. Later, he again received the post of Junior Governor of Jiangling. When Wuzong was critically ill, the Prince of Guang was established as Imperial Great-Uncle and ascended the throne before the coffin. Because the Emperor had wandered among the common people, he fully knew the hardships of agriculture and was diligent in the various administrative affairs. Looking back upon the earlier darkness and tyranny, he broadly revived Buddhist monasteries. Later, at the age of fifty, he died in Xianning Hall and was buried in Zhenling. He was on the throne for thirteen years), changed the era name to Dazhong.