《新唐书·本纪·卷二·太宗》
唐军西进，快到霍邑时，适逢久雨不住，即将断粮，高祖打算回师太原，太宗劝谏说： 义军为天下而起兵，应该直入咸阳，号召、指挥天下。
唐兵西，将至霍邑，会天久雨，粮且尽，高祖谋欲还兵太原。太宗谏曰： 义师为天下起也，宜直入咸阳，号令天下。
When the Tang army advanced westward, they were about to reach Huoyi when they encountered prolonged heavy rain, and their food supply was about to run out. Gaozu planned to return to Taiyuan, but Taizong advised him, saying, "The义军 (righteous army) has raised troops for the天下 (world) and should go directly to Xianyang to call and lead the天下 (world)."