A.T. Robertson Commentary Luke 22:60

"But Peter said, Man, I know not what thou sayest. And immediately, while he yet spake, the cock crew." — Luke 22:60 (ASV)

I know not what thou sayest (ουκ οιδα ο λεγεις). Each denial tangles Peter more and more.

While he yet spake (ετ λαλουντος αυτου). Genitive absolute. Peter could hear the crowing all right.