Sweet apples signify Halaal wealth and sour apples signify Haram wealth, because people are put off by sour things and they are also put off by Haraam things.
Smelling an apple in the mosque is indicative of praise. Smelling itin a gathering is indicative of evildoing and scandal. If a ruler dreams that he picked apples from an apricot tree, he will impose taxes that were never known before. If a ruler throws an apple to a man, he willsend a messenger to give him what he wants.