He's got a point. If they see us, we don't see them. We'll be at a disadvantage.

8 seconds sound clip from the Ninjutsu (1968) movie soundboard.

You can hear this line at 00:51:36 in the Blu-ray version of the movie.

Quote context

[...]

- We'll arrive soon. In about an hour's time I reckon we should reach the house.

- But we can't just go in dressed like this.

- Huh? Why not?

- Alright, alright, let's get goin'.

(horse neighing)

- Just what were you suggesting?

- I reckon they're already be ninja at the house. We don't want them to notice us.

- He's got a point. If they see us, we don't see them. We'll be at a disadvantage.

- Right, shoes should be on the other foot. We must disguise ourselves, go separately.

- And what precisely do you have in mind we should do?

- You can arrange till we get taken on as servants. They won't be expecting that.

- Well, my brothers, not to worry. That's part of the plan.

[...]