大毘盧遮那經阿闍梨真實智品中阿闍梨住阿字觀門 1.24

1.24

經云：「祕密主白佛言：『云何如來、應供、正遍知得一切智智？廣演分布種種道，演說一切智智。各各同彼言音，住種種威儀，一切智智道一味。世尊！譬如地、水、火、風、空，自性遍一切處，皆不出阿字之門。』」所以金剛手問大日如來：「如是智慧，以何為因？云何為根？云何究竟耶？」佛告金剛手：「菩提心為因，悲為根，方便為究竟。祕密主！云何菩提？謂：如實知自心即是阿字一相，亦非一亦非異。」

The sūtra says: 'The Master of Secrets addressed the Buddha, saying: "How does the Tathāgata, Arhat, Samyaksambuddha attain sarvajñajñāna (all-knowledge wisdom)? He broadly expounds and distributes the various paths, expounding the sarvajñajñāna. Each accords with their sounds and speeches and abides in various deportments; the path of sarvajñajñāna has a single flavor. World-Honoured One! Just as earth, water, fire, wind, and space, their intrinsic nature pervading all places, none departs from the gate of the letter A."' Therefore Vajrapāṇi asked Mahāvairocana Tathāgata: 'With this wisdom, what is the cause? What is the root? What is the ultimate?' The Buddha told Vajrapāṇi: 'Bodhicitta is the cause, compassion is the root, and skillful means is the ultimate. Master of Secrets! What is awakening (bodhi)? It means knowing one's own mind as it really is, which is the single mark of the letter A, neither one nor different.'