So one night, when the baby had been particularly cruel to her, she called on the goblins for help.

9 seconds sound clip from the Labyrinth (1986) movie soundboard.

You can hear this line at 00:07:37 in the Blu-ray version of the movie.

Quote context

[...]

(THUNDER RUMBLES, BABY CRYING)

- What do you want? You want a story, huh? Okay.

- Once upon a time, there was a beautiful, young girl whose stepmother always made her stay home with the baby.

- And the baby was a spoiled child and he wanted everything for himself and the young girl was practically a slave.

- But what no one knew was that the king of the goblins had fallen in love with the girl and he had given her certain powers.

- So one night, when the baby had been particularly cruel to her, she called on the goblins for help.

- Listen.

- Say your right words, the goblins said. And we'll take the baby to the Goblin City and you will be free.

- But the girl knew that the king of the goblins would keep the baby in his castle forever and ever and ever and turn it into a goblin.

- And so the girl suffered in silence until one night, when she was tired from a day of housework and she was hurt by the harsh words of her stepmother and she could no longer stand it.

[...]