3rd Century
St. Hippolytus
Apostolic & Early Church
St. Hippolytus (c. 170 – c. 235), Theologian of the early Roman church. Wikipedia
"All shall be careful so that no unbeliever tastes of the eucharist, nor a mouse or other animal, nor that any of it falls and is lost. For it is the Body of Christ, to be eaten by those who believe, and not to be scorned. "
Apostolic Tradition 4
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Why this quote matters
Early liturgical formula of identification.
Source citation: Apostolic Tradition 4.