From Zen Master Keizan’s Transmission of Light (All passages taken from The Denkōroku: The Record of the Transmission of the Light; all Capitalized words are representative of THAT WHICH IS UNBORN, UNCOMPOSED, UNDYING and UNCREATED )
Once you become conscious of the LORD OF THE HOUSE then, to be sure, Mahākāśyapa will be able to wriggle his toes in your shoes. Do you not know that Gautama completely vanished at the very moment when ‘Gautama raised His eyebrows and blinked His eyes’ and that Mahākāśyapa realized his TRUE SELF at the very moment when Mahākāśyapa’s face broke out in a smile’? This is not the delusion of a personal substantive self! To the contrary, the EYE AND TREASURY OF THE TRUE LAW has been completely entrusted to you yourself; therefore, whatever name you give IT, do not call IT Mahākāśyapa’s or Shakyamuni’s.
There is no Dharma to impart to another nor any to receive from another—this is what I call the TRUE DHARMA. To express this Shakyamuni held the flower aloft to let it be known that IT was, is and will be immutable and indestructible whilst Mahākāśyapa broke into a smile to let it be known that IT was, is and will be beyond beginning or end; in this way Master and disciple met face to face and their life-lines flowed into each other. Their perfectly pure, bright, full understanding has nothing to do with ‘thinking in the mind’.
The “Lord of the House” is the Inner-Dharma Master—an Unborn Spirit imbued with Nirvanic Light Itself. Before you blink in consternation at this realization, IT has already moved the blossoming Lotus Flower before your Mind’s Eye. IT is the Dharma-Eye—the Inner-Lord and Guardian of the True Buddhadharma. IT does not belong to you or Mahākāśyapa or Buddha Gautama; IT is the Sacred Reliquary THAT reveals your True Lord and Master. When your smile and Mahākāśyapa’s become As One, then you will be entrusted with the TRUE DHARMA SEAL: Recollection of the Self-Same Singular Smile of the Dharmakaya ITself.