Which William Shakespeare play includes the line, “Beware the ides of March”?

Which William Shakespeare play includes the line, “Beware the ides of March”?

In the dramatic opening scenes of the tragedy Julius Caesar, the famous warning “Beware the ides of March” is shouted by a fortune-teller to the Roman leader. This moment occurs during the festival of Lupercal, where the soothsayer breaks through the celebratory noise to deliver a prophetic caution about the middle of the month. Caesar, displaying his characteristic arrogance, briefly stops the procession only to label the man a “dreamer” before moving on, blissfully unaware of the assassination plot already brewing among his closest peers.

Source:

https://www.youtube.com/watch?v=dCZouy5nkfA