《新唐书·列传·卷二十三》
贞观十三年，王珪病重，太宗派南平公主回家探望，又派民部尚书唐俭调理药剂饮食。
十三年，病。帝遣公主就第省视，复遣民部尚书唐俭增损药膳。
In the 13th year of Zhenguan, Wang Gui fell seriously ill, and Taizong sent Princess Nanzhang home to visit him, and also sent Minister of the People Tang Jian to take care of the medicine and diet.