《辽史·本纪·卷十八》
二十日，皇上拜谒大行皇帝御容，哀恸不已，于是下诏图画北府宰相萧孝先、南府宰相萧孝穆像挂于御容殿。
丁巳，上谒大行皇帝御容，哀恸久之。因诏写北府宰相萧孝先、南府宰相萧孝穆像于御容殿。
On the 20th, the Emperor went to pay his respects to the portrait of the deceased Emperor, and grieved inconsolably. Thereupon he decreed that portraits of Xiao Xiaoxian, the Prime Minister of the Northern Palace, and Xiao Xiaomu, the Prime Minister of the Southern Palace, be painted and hung in the hall where the portrait of the deceased Emperor was located.