On the day you finished this painting, I made a wish. Perhaps you would call it a prayer. My wish was granted.

10 seconds sound clip from the The Picture of Dorian Gray movie soundboard.

You can hear this line at 01:10:55.446 in the Blu-ray version of the movie.

Quote context

[...]

- In spite of the indescribable corruption of the portrait, Basil was still able to recognize his painting of Dorian.

- It was from within apparently that the foulness and horror came.

- It was as if some moral leprosy were eating the thing away.

- He could not believe that he had made this portrait, yet there was his own name, just as he had painted it.

- But this is monstrous. It's beyond nature, beyond reason. What does it mean?

- On the day you finished this painting, I made a wish. Perhaps you would call it a prayer. My wish was granted.

- But you told me you had destroyed my painting.

- I was wrong. It has destroyed me.

- It has the eyes of a devil.

- Each of us has heaven and hell in him.

- But if this is true, if this is what you have done with your life, it is far worse than anything that's been said of you.

- Do you know how to pray, Dorian?

[...]