Kōmyōzō Zanmai

Koun Ejō and the Transmission of Light

The Kōmyōzō Zanmai holds a unique place in the history of Sōtō Zen. It is one of the rare doctrinal texts written by a successor of Dōgen rather than by the founder himself. Ejō, who was Dōgen's closest disciple and the second abbot of Eiheiji (1248–1280), expresses here his intimate understanding of samādhi as he received it from his master.

The title echoes Tōzan Ryōkai's Hōkyō Zanmai (宝鏡三昧, "Samādhi of the Jewel Mirror"), one of the foundational texts of the school — as if Ejō were proposing here a "luminous" version of that mirror, where light itself becomes the treasure. Where Tōzan emphasizes the reflective and discerning function of the mirror, Ejō focuses on the light that precedes all reflection — awakened awareness itself, prior to any duality of subject and object.

Historical Context

The Kōmyōzō Zanmai was composed in the second half of the 13th century, after Dōgen's death (1253), while Ejō was serving as abbot of Eiheiji. The Sōtō community, still young and fragile, was facing internal tensions and the necessity of faithfully preserving and transmitting the founder's teaching.

Ejō had been a direct witness to Dōgen's final years at Kōshōji and then at Eiheiji. He had not only compiled the Shōbōgenzō Zuimonki, but also participated in copying and organizing the fascicles of the Shōbōgenzō. The Kōmyōzō Zanmai can be read as Ejō's personal synthesis — the fruit of his own spiritual maturation under Dōgen's guidance, and a text intended to guide subsequent generations in the authentic practice of zazen.

Structure and Content

The Kōmyōzō Zanmai is a short text, composed of a series of exhortations and poetic descriptions of authentic samādhi. Its structure is not linear but circular: each passage returns to the central theme of the light-enlightenment present in the very moment of seated practice.

• The Opening — Invocation of samādhi as the treasury of light, transmitted by buddhas and patriarchs, not as an external object but as the very nature of mind.
• The Description of Samādhi — The light of the treasury penetrates all things without obstruction, like emptiness which is both lucidity and compassion. Samādhi is not an altered state of consciousness, but ordinary consciousness becoming fully itself in silent sitting.
• Practical Instruction — Direct advice for zazen: do not seek, do not reject, simply sit with trust that the light is already there. The seated body is itself the treasury, each posture is already enlightenment.
• Confirmation — Samādhi is certified by the transmission of masters: it is not a personal experience to be validated by oneself, but a reality verified in the relationship with the master and the community.

Importance of the Kōmyōzō Zanmai in the Sōtō Tradition

The Kōmyōzō Zanmai is particularly valuable because it gives us access to Ejō's own voice — no longer merely a transcriber of Dōgen's words, but a master in his own right expounding his own realization. It constitutes the link between Dōgen and Keizan Jōkin, the "second founder" of the Sōtō school.

The text is often compared with Dōgen's Jijuyū Zanmai (自受用三昧, "Samādhi of Self-Reception"). Where Dōgen expounds the metaphysical vision of samādhi as the activity of the buddha, Ejō offers an existential and practical version: samādhi is our most intimate inheritance, the light that we already are without knowing it, and which the practice of zazen reveals.