《北齐书·列传·卷九》
起初，有折冲将军元正烈在邺城束面的水中得到印玺献上，文字是 天王后玺 大概是石氏制作的。
初，有折冲将军元正烈于邺城东水中得玺以献，文曰 天王后玺 ，盖石氏所作。
At first, there was General Zhechong Yuan Zhenglie who got the seal in the water of the beam city and dedicated it. The text was "the seal of the queen of heaven", which was probably made by the Shi clan.