《旧唐书·列传·卷四十二》
武则天听了，便把魏元忠收入狱中，召太子、相王及宰相到朝廷，让张昌宗与魏元忠在殿前对质，反复不能决断。
则天惑其言，乃下元忠诏狱，召太子、相王及诸宰相，令昌宗与元忠等殿前参对，反复不决。
After hearing this, Wu Zetian threw Wei Yuanzhong into prison and summoned the crown prince, Prince Xiang, and the prime ministers to the imperial court, having Zhang Changzong and Wei Yuanzhong confront each other before the throne. But the matter could not be decided after repeated deliberations.