大毘盧遮那成佛經疏 10.87

10.87

次風神真言。亦佛化身也，三昧如前。皤（平）也吠（平，即以本名為真言也）以皤字為體也。吠是縛義，入阿字門是無縛之義，即解脫也。傍有阿字之點，即行也。第三吠字是無言說之義，又加伊字是三昧耶也。是諸乘，以無礙乘而度一切。

Next is the mantra of the Wind Deity. He is also an emanation body of the Buddha, with the samādhi as before. *Vāyave* (namely, using his original name as the mantra) takes the syllable *vā* as its essence. *Ve* has the meaning of bond; entering the syllable A gateway, it has the meaning of being without bonds, which is liberation. The dot of the syllable A beside it is practice. The third syllable, *ve*, has the meaning of ineffability, and adding the syllable *i* makes it samaya. These are the vehicles; by means of the unhindered vehicle, one crosses over all.