- In the future, the Master needs strong young men like you working for him.
- Oh, doing what?

5 seconds sound clip from the Mysterious Footworks of Kung Fu movie soundboard.

You can hear this line at 00:37:28.667 in the Blu-ray version of the movie.

Quote context

[...]

- I finished mending your jacket. Take a look at it... Hey, listen. Next time you fight, undo the buttons, I don't wanna mend it again.

- And now, Master's asked me to give you your wages.

- Oh, my wages! Oh, so much.

- Master's happy with how you're working. He said that next time you'll be paid even more.

- The master's kind to me. How can I repay him?

- Repay?

- In the future, the Master needs strong young men like you working for him.

- Oh, doing what?

- He said... Oh, someone's here. I better go.

- Goodbye, goodbye.

- Havin' fun? Enjoyin' yourself with her, eh?

- What do ya mean? She was just bringin' me my wages.

- Wages? Ah.

[...]