大毘盧遮那成佛經疏 10.191

10.191

次荼吉尼真言。此是世間有造此法術者，亦自在呪術，能知人欲命終者，六月即知之。知已即作法，取其心食之。所以爾者？人身中有黃，所謂人黃，猶牛有黃也。若得食者，能得極大成就，一日周遊四域，隨意所為皆得，亦能種種治人。有嫌者以術治之，極令病苦。然彼法不得殺人，要依自計方術。人欲死者，去六月即知之，知已以術取其心。雖取其心，然有法術，要以餘物代之，此人命亦不終，至合死時方壞也。大都是夜叉大自在，於世人所說大極，屬摩訶迦羅，所謂大黑神也。毘盧遮那以降伏三世法門，欲除彼故，化作大黑神。過於彼無量示現，以灰塗身，在曠野中以術悉召一切法成就乘空履水皆無礙諸荼吉尼，而訶責之：「猶汝常噉人故，我今亦當食汝。」即吞噉之，然不令死彼，伏已放之，悉令斷肉。彼白佛言：「我今悉食肉得存。今如何自濟？」佛言：「聽汝食死人心。」彼言：「人欲死時，諸大夜叉等知彼命盡，爭來欲食。我云何得之？」佛言：「為汝說真言法及印，六月未死即能知之。知已以法加護，勿令他畏得損，至命盡時聽汝取食也。」如是稍引令得入道，故有此真言。

Next is the mantra of the Ḍākinīs. In the world, there are those who perform this sorcery. It is also an autonomous sorcery by which one is able to know when a person is about to die; they know it six months in advance. Having known it, they immediately perform the rite, extract the person's heart, and eat it. Why is this so? In the human body there is yellow bile, the so-called 'human bezoar,' just as cattle have bezoars. If one can eat it, one can attain extremely great accomplishments, traveling around the four continents in a single day, achieving whatever one wishes, and also being able to cure or afflict people in various ways. If there is someone they dislike, they afflict them with sorcery, causing them severe illness and suffering. However, that technique cannot directly kill a person; it must rely on their own calculated methods. When a person is about to die, they know it six months before. Having known it, they extract their heart by sorcery. Although they extract their heart, by virtue of their technique they must substitute it with another substance, so that the person's life does not end immediately, failing only when the appointed time of death arrives. These are mostly Yakṣas of Maheśvara; spoken of among worldly people as extremely great, they belong to Mahākāla, the so-called Great Black Deity. Vairocana, through the gateway of subduing the three times, wished to eliminate them, and so transformed into Mahākāla. Surpassing them in immeasurable manifestations, his body smeared with ashes, in the wilderness he used his techniques to summon all the Ḍākinīs who possessed accomplishments in methods and moved through the air or trod on water without hindrance, and rebuked them, saying: 'Because you constantly devour human beings, I shall now eat you as well.' He then swallowed and devoured them, yet did not let them die. Having subdued them, he released them and commanded them all to abstain from meat. They said to the Buddha: 'We currently survive entirely by eating meat. How shall we sustain ourselves now?' The Buddha said: 'I permit you to eat the hearts of dead people.' They said: 'When a person is about to die, the great Yakṣas and others, knowing that their life is exhausted, vie with one another to eat them. How can we obtain them?' The Buddha said: 'I will explain to you the mantra method and mudrā. Six months before death, you will be able to know it. Having known it, protect them with the method so that other terrifying beings cannot harm them; when their life is exhausted, I permit you to take and eat them.' In this way, he gradually guided them to enter the path; therefore, there is this mantra.