大毘盧遮那成佛經疏 14.56

14.56

此四字即是四輪也。第一字為地金剛輪，第二字水輪，第三字火輪，第四字風輪也。暗，此字本體是金剛界體，兼有長聲為行，行即火輪，上有點即空輪，以為莊嚴也。次欠水輪者，佉是空義，亦有長聲是行，有點為空，即大空也。次暗字為火者，梵音阿竭喃是火也。噁是涅槃性。黑即風也。復次虛空無色，而能含受一切色像。今此佉字有行有點，即是謂一切色像。夫大空者，亦如虛空具一切法色像也，此空即是成辦一切事。是故欠字得作水用（更問）。糝索（地）唅鶴（風）藍𠸪（火）鑁嚩（水），如上阿字有四字，謂長聲上有點及傍二點，短聲亦有上點及傍點，二字為四。今此娑等當知亦爾，皆有四字。今但舉其短聲，合為長聲二字在於短聲之前，准上而說也。糝索唅鶴（此是也。餘效此）又總而論之，阿字是佛部，娑字是蓮華部，嚩字是金剛部，風火遍三部用也（更問）。如蓮華部中，自有地水火風，若息災即須金剛方輪，若增益即須水輪，降伏即須火輪等，隨類用之。當知此阿娑訶囉嚩五門，即同上之五字輪，隨一輪中自有四輪也。如金剛部嚩字自有四輪，隨作息災、增益、降伏，各隨類用也。若讀餘真言，隨其部類有此等字者，即知彼所應用處，各有所應最為宗轄也。此一段未明了，更問之。更有三道真言：

These four syllables are the four wheels. The first syllable is the earth vajra wheel; the second syllable is the water wheel; the third syllable is the fire wheel; the fourth syllable is the wind wheel. AṂ: the intrinsic essence of this syllable is the essence of the Vajradhātu; it also has a long vowel which is practice, practice being the fire wheel, and upon it is a bindu which is the space wheel, serving as an adornment. Next, KHAṂ is the water wheel: KHA has the meaning of space; it also has a long vowel which is practice, and with the bindu it is space, namely the great emptiness. Next, the syllable AṂ is fire: in Sanskrit agni is fire. AḤ is of the nature of nirvāṇa. HA is wind. Furthermore, space has no visible form, yet it can contain and hold all forms and images. Now this syllable KHA has practice and has a bindu, which refers to all forms and images. The great emptiness, like space, also possesses the forms and images of all dharmas; this emptiness is the accomplishment of all activities. Therefore, the syllable KHAṂ can be used for water. (Inquire further.) SAṂ SAḤ (earth), HAṂ HAḤ (wind), RAṂ RAḤ (fire), VAṂ VAḤ (water): just as the syllable A above has four syllables—namely, a long vowel with a bindu above and two dots beside (visarga), and a short vowel also with a bindu above and dots beside, two syllables making four—now these [syllables] such as SA should also be known to be like this, each having four syllables. Here, only their short vowels are mentioned, combining to place the two syllables with long vowels before the short vowels, explained in accordance with the above. SAṂ SAḤ, HAṂ HAḤ (this is it; the rest follow this). Moreover, discussed generally, the syllable A is the Buddha family, the syllable SA is the Lotus family, and the syllable VA is the Vajra family; wind and fire pervade the use of the three families. (Inquire further.) Just as within the Lotus family there are naturally earth, water, fire, and wind: for calming disasters, one must use the vajra square wheel; for increasing prosperity, one must use the water wheel; for subjugation, one must use the fire wheel, applying them according to category. One should know that these five gateways of A, SA, HA, RA, and VA are identical to the five-syllable wheels above; within any single wheel there are naturally four wheels. Just as the syllable VA of the Vajra family naturally has four wheels, used respectively to perform calming disasters, increasing prosperity, and subjugation, each applied according to category. When reading other mantras, if these syllables occur according to their family categories, one immediately knows where they should be applied, each having its governing role. This passage is not yet fully clear; inquire further into it. There are also three lines of mantras: