Augustine of Hippo
Catena Aurea · Matthäusevangelium 26
Now Peter sat without in the palace: and a damsel came unto him, saying, Thou also wast with Jesus of Galilee. But he denied before them all, saying, I know not what thou sayest. And when he was gone out into the porch, another maid saw him, and said unto them that were there, This fellow was also with Jesus of Nazareth. And again he denied with an oath, I do not know the man. And after a while came unto him they that stood by, and said to Peter, Surely thou also art one of them; for thy speech bewrayeth thee. Then began he to curse and to swear, saying, I know not the man. And immediately the cock crew. And Peter remembered the word of Jesus, which said unto him, Before the cock crow, thou shalt deny me thrice. And he went out, and wept bitterly.
(ubi sup.) The second denial was not outside the door, but after he had returned to the fire; for the second maid did not see him after he had gone out, but as he was going out; his getting up to go out drew her attention, and she said to them that were there, that is, to those that were standing round the fire in the hall, Tins fellow also was with Jesus of Nazareth. He who had gone out, haying heard this returned, that he might by denial vindicate himself. Or, as is more likely, he did not hear what was said of him as he went out, but it was after he came back that the maid, and the other man whom Luke mentions, said to him, And thou also art one of them.