From the Lenten Triodion:
Friday of the Sixth Week

Two of the disciples are sent today to bring the foal of an ass to The Master of all: He who is borne on high by the hosts of the Seraphim comes riding on a colt!  All-devouring death, the ruler of this world, begins to be afraid, for through Lazarus first of all, he is despoiled of mankind!    

(Second Sessional Hymn - Matins)

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