大毘盧遮那成佛經疏 13.216

13.216

次亦如前舒右掌，而以風空相捻，如持花形，即滿意天子印也（餘三指相並合之也）。以上並淨居天子耳。

Next, also extend the right palm as before, and pinch the wind and space fingers together like holding a flower—this is the Manobhirāma Devaputra mudrā (the remaining three fingers are joined side by side). The above are all the Śuddhāvāsa devaputras.