大日經持誦次第儀軌 1.146

1.146

字門真實義，諸法無染著，
音聲所流出，當作如是觀。
此中身密相，所謂蓮華印，
如前奉敷座，我已分別說。

The true meaning of the syllable-dvāra
is that all phenomena are free from defilement;
flowing out from the sound,
one should contemplate it thus.
The physical secret mark herein
is the so-called lotus mudrā;
as with the previously presented spread seat,
I have already explained it in detail.