New Living Translation
Peter swore, “A curse on me if I’m lying—I don’t know the man!” And immediately the rooster crowed.

American Standard Version
Then began he to curse and to swear, I know not the man. And straightway the cock crew.

Berean Study Bible
At that he began to curse and swear to them, “I do not know the man!” And immediately a rooster crowed.

Douay-Rheims Bible
Then he began to curse and to swear that he knew not the man. And immediately the cock crew.

English Revised Version
Then began he to curse and to swear, I know not the man. And straightway the cock crew.

King James Bible
Then began he to curse and to swear, saying, I know not the man. And immediately the cock crew.

World English Bible
Then he began to curse and to swear, "I don't know the man!" Immediately the rooster crowed.

Young's Literal Translation
Then began he to anathematise, and to swear -- 'I have not known the man;' and immediately did a cock crow,

Matthew 26:74 Additional Translations ...