The Codex Corbeiensis I, designated by ff1 or 9 (in the Beuron system), is an 8th, 9th, or 10th-century Latin New Testament manuscript, written on vellum.
The manuscript contains 39 parchment folios with the text of the four Gospels, Acts of the Apostles, and General epistles.
[1] The text of the Gospel of Matthew in the codex transmits one of the pre-Jerome translations known collectively as Old Latin.
In Matthew 16:12 it has textual variant της ζυμης των αρτων των Φαρισαιων και Σαδδουκαιων (leaven of bread of the Pharisees and Sadducee's) supported only by Codex Sinaiticus and Curetonian Gospels.
[2] It was edited by J. Martianay in 1695 (Vulgata antiqua Latina et versio Evangelii secundum Matthaeum, Paris 1695), Sabatier, Bianchini, Belsheim, Calmet, Migne, and Jülicher.