大佛頂如來放光悉怛多般怛羅大神力都攝一切呪王陀羅尼經大威德最勝金輪三昧呪品 1.231

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「召一切小天呪法：以右手中指直竪，餘指作拳，左手亦然。二手合腕，去心胸八寸。右手中指小屈押左中指節，來去動，勿令急。

"The ritual method of the mantra for summoning all minor devas: with the right middle finger standing straight, make fists with the remaining fingers; the left hand is also like this. Join the wrists of both hands eight inches away from the heart and chest. Bend the right middle finger slightly to press the joint of the left middle finger, moving it back and forth; do not make it hurried.