大日經略攝念誦隨行法 1.5

1.5

契謂齊輪合，並建於二空，
五處頂肩心，最後加咽位。
次以不動聖，辟障及除垢，
而能淨眾事，結護隨相應。

The mudrā is formed by joining the tips of the fingers evenly,
and erecting both thumbs side by side,
[touching] the five places: crown, shoulders, and heart,
and finally adding the position of the throat.
Next, by means of the Holy Acala,
expel obstacles and remove defilements,
able to purify all matters
and form the boundary protection in accord with practice.