- Were my words all you needed?
- No.
- Then why do you seek my approval now?
- Because you're my son.

8 seconds sound clip from the Alexander the Great (1956) movie soundboard.

You can hear this line at 00:54:06 in the Blu-ray version of the movie.

Quote context

[...]

- No! No, Alexander. Go to his wedding in peace. Accept it as the will of the gods.

- I have my destiny, you have yours.

- Greetings, companion... my son.

- How do I tear down this wall that always seems to stand between us? By breach? Assault? By storm?

- You built the wall.

- How? By marrying Eurydice? You said 'So be it'.

- Were my words all you needed?

- No.

- Then why do you seek my approval now?

- Because you're my son.

- The decree of your divorce stated that my mother was unfaithful.

- Everyone worships the gods in their own way. Your mother confused religion...

- But it states openly...

- That was a mistake.

- A mistake that threw dirt on my name.

[...]