大毘盧遮那成佛經疏 10.71

10.71

Now for this mantra, the initial syllable *sa* is the essence. *Sa* has the meaning of outflow (āsrava) and also the meaning of solidity. Entering the syllable A gateway, it is without outflow and without solidity. If there is solidity, it is a dharma of arising, ceasing, and disintegration. If it is made identical to the syllable A, this solidity is originally unborn; that is to say, attaining mastery among all dharmas equal to empty space, being able to act as an isle of all treasures. In my personal opinion, Śākyamuni, through the power of mahākaruṇā, even for icchantikas and the like whose bodies are entirely tight-knit like vajra, also causes them to break through this view and enter the Buddha Dharma, fulfilling his vow of bestowing the great jewel. Is this not attaining mastery among all dharmas, able to break through all solidity?