金剛三昧經論 2.173

2.173

論曰：此下第二廣顯方便，有三問答。此初番中舉數總標。守一心如者，一心法中有二種門，今先守其心真如門，為伏無明大龍勢故，無明正迷一心如故。此中守者，入時靜守一如之境，出時不失一味之心，故言守一。如《本業經》十行中言「十為自在轉大法輪故，所謂菩薩三寶。菩薩爾時於第一中道智為覺寶，一切法無生動與則為法寶，常行六道與六道眾生和合名僧寶，轉一切眾生流入佛海故。」案云：三時不失中道一味，即是此觀守一之用。此觀在於十行位也。餘門後顯，此中不論。

The commentary says: What follows is the second part, which extensively reveals the expedients, having three questions and answers. In this first exchange, the numbers are cited to provide a general designation. "Guarding the one mind's thusness": within the dharma of the one mind there are two gates; here one first guards its gate of the mind as true thusness, in order to subdue the force of the great dragon of ignorance, because ignorance directly deludes the thusness of the one mind. Here, "guarding" means that upon entering, one quietly guards the realm of the one thusness, and upon emerging, one does not lose the mind of the single taste; therefore it is said to "guard the one." As stated in the Ten Practices in the Benye jing: "The tenth is for turning the great wheel of Dharma with mastery; that is, the bodhisattva's Three Jewels. At that time, the bodhisattva takes the cognition of the supreme Middle Way as the Buddha Jewel; all dharmas being unborn, their movement and giving are the Dharma Jewel; constantly practicing in the six destinies and harmonizing with the sentient beings of the six destinies is called the Saṅgha Jewel, because they turn all sentient beings so that they flow into the ocean of the Buddha." Note: Not losing the single taste of the Middle Way at the three times is precisely the function of guarding the one in this contemplation. This contemplation belongs to the rank of the Ten Practices. The other gate will be revealed later and is not discussed here.