《周书·列传·卷三十》
李穆频繁地到宇文护那裹去，请求用自己的儿子李惇、李怡等代替李基而死，辞情凄切，听者无不为之动容。
穆频诣护，请以子惇、怡等代基死，辞理酸切，闻者莫不动容。
Li Mu frequently went to 宇文护 and asked to replace Li Ji with his own sons Li Dun and Li Yi, but they were so sad that they couldn't help but be moved.