《北史·列传·卷三十六》
朝廷认为元颢势单力弱，永安二年春，下诏命元天穆先平定齐地，然后征讨元颢。
朝廷以颢孤弱，永安二年春，诏元天穆先平齐地，然后征颢。
The court thought that Yuan Hao was weak, so in the spring of Yong'an Year, they issued an edict, ordering Yuan Tianmu to first pacify the Qi lands, and then attack Yuan Hao.