Where do you get the light arrows in legend of Zelda ocarina of time?

Go to the house accross the street from the post office, in the house is a man with a pointy hat. Fuse kingstones with him;and a portal to the clouds will appear. Go there and there will be an old man posesed by a ghost. Go to the end of his bed three or four paces away from the end and pull out your gust jar and suck him up. Later when you get to the cloud mansion he will give you the arrows.