摩訶止觀 2.23

2.23

勸修者，若人欲得智慧如大海，令無能為我作師者，於此坐不運神通，悉見諸佛、悉聞所說、悉能受持者，常行三昧於諸功德最為第一。此三昧是諸佛母、佛眼、佛父、無生大悲母；一切諸如來，從是二法生。碎大千地及草木為塵，一塵為一佛剎，滿爾世界中寶用布施，其福甚多；不如聞此三昧不驚不畏，況信、受持、讀誦、為人說？況定心修習，如𤛓牛乳頃？況能成是三昧？故無量無量。《婆沙》云：「劫火、官賊、怨毒、龍獸、眾病侵是人者，無有是處。此人常為天龍八部、諸佛皆共護念、稱讚。皆共欲見，共來其所。」若聞此三昧，如上四番功德皆隨喜，三世諸佛菩薩皆隨喜，復勝上四番功德。若不修如是法，失無量重寶，人天為之憂悲。如齆人，把栴檀而不嗅；如田家子，以摩尼珠博一頭牛（云云）。

Regarding the exhortation to practice: if someone wishes to attain wisdom like the great ocean, so that none can act as their teacher, and sitting right here without exercising supernatural powers, completely see all Buddhas, completely hear what they expound, and completely be able to accept and uphold it, then the constantly walking samādhi is foremost among all merits. This samādhi is the mother of all Buddhas, the eye of the Buddhas, the father of the Buddhas, and the great compassionate mother of non-arising; all Tathāgatas are born from these two dharmas. If one were to pulverize the earth, grasses, and trees of a great trichiliocosm into dust particles, each particle becoming a buddha-land, and filled with jewels throughout these worlds, give them in almsgiving, the merit would be exceedingly great; yet it is not equal to hearing of this samādhi without fear or dread, how much less to having faith, accepting and upholding, reading and reciting, and expounding it for others? How much less to cultivating it with a settled mind for the time it takes to milk a cow? How much less to being able to accomplish this samādhi? Therefore [its merit] is immeasurable and boundless. The Vibhāṣā says: "That the fire of the kalpa, official bandits, poisonous resentment, dragons, wild beasts, or various diseases should harm this person—there is no such possibility. This person is constantly protected and remembered, praised and extolled by the eight classes of devas and nāgas and all Buddhas. All wish to see him, and all come to his dwelling." If upon hearing of this samādhi, one rejoices in accordance with the fourfold merits above, the Buddhas and bodhisattvas of the three periods of time will all rejoice in accordance, surpassing the previous fourfold merits. If one does not cultivate such a dharma, one loses immeasurable heavy treasures, and humans and devas grieve and sorrow for it. It is like an anosmic person holding sandalwood without smelling it; like a peasant boy trading a cintāmaṇi jewel for an ox (and so forth).