But I must have strict assurance from Corleone.

5 seconds sound clip from the The Godfather (1972) movie soundboard.

You can hear this line at 02:10:45 in the Blu-ray version of the movie.

Quote context

[...]

- In my city, we would keep the traffic in the dark people, the colored. They're animals anyway, so let them lose their souls.

- I hoped that we could come here and reason together.

- And as a reasonable man, I'm willing to do whatever's necessary to find a peaceful solution to these problems.

- Then we are agreed. The traffic in drugs will be permitted, but controlled.

- And Don Corleone will give our protection in the east and there will be the peace.

- But I must have strict assurance from Corleone.

- As time goes by and his position becomes stronger will he attempt any individual vendetta?

- Look, we are all reasonable men here. We don't have to give assurances as if we were lawyers.

- You talk about vengeance. Is vengeance gonna bring your son back to you? Or my boy to me?

- I forego the vengeance of my son.

[...]