一切經音義 19.203

19.203

印璽（下思紫反天子之玉印也璽信也亦神器也說文從土作[(企-止+爾)/土]今從玉作𤫆）。

印璽 (the lower character has the fanqie 思紫. It is the jade seal of the Son of Heaven. 璽 signifies trust (信); it is also a sacred implement of state. The Shuowen writes it with 土 (earth) as [(企-止+爾)/土]; now it is written with 玉 (jade) as 𤫆).