Matthew 26:74-75 Amplified Bible (AMP)

74. Then Peter began to invoke a curse on himself and to swear, I do not even know the Man! And at that moment a rooster crowed.

75. And Peter remembered Jesus' words, when He had said, Before a single rooster crows, you will deny and disown Me three times. And he went outside and wept bitterly.

Matthew 26