Eye of rabbit, harp string hum.
4 seconds sound clip from the Harry Potter and the Sorcerer's Stone movie soundboard.
You can hear this line at 00:56:52 in the Blu-ray version of the movie.
Quote context
[...]
- A bezoar is a stone taken from the stomach of a goat and it will save you from most poisons.
- As for monkshood and wolfsbane, they are the same plant, which also goes by the name of aconite.
- Well... why aren't you all copying this down?
- Eye of rabbit, harp string hum. Turn this water into rum.
- Eye of rabbit, harp string hum.
- What's Seamus trying to do to that glass of water?
- Turn it into rum. Actually managed a weak tea yesterday, before...
- Hey, look! Neville's got a Remembrall.
- I've read about those. When the smoke turns red, it means you've forgotten something.
[...]