Wa alaykum assalaam wa rahmatullahi wa barakaatuh.
What i tried to ask was that is there any reward for leaving off something that is permissible, for example eating apples?
The word "anything" in the text caused a bit of confusion to me.
The wording in Arabic is, "man taraka
shay'an...", and i'm not sure as i'm not an Arab, but "shay'an" in this sentence means "something" rather than "anything".
Every action is by intention, is it not? So if you leave off something (for no reason, as in the case of an apple) even though Allaah `azza wa jall has made it permissible for you, with the intention of getting rewarded for it, then I don't know, akhy, that's up to Allaah to reward you or not.
But the example of the eating of an apple is not very practical, because it's neither harmful to your Imaan or your health. Unless you mean not eating it because you're giving it away to someone else instead, like how `Aisha gave away the camel's meat... That would make sense. Even though it really has nothing to do with the "man taraka shay'an" (whoever leaves off/abandons something) hadeeth.
Like in the case of an argument--you're in a heated argument=>you forfeit=>the argument ends=>Allaah fixes you and that person's relationship
Or haraam earnings--you quite the job=>no more sinning=>Allaah gives you an even better job. (65:2-3)
Or listening to Music--you listen to music=>Raan (black spots) form around your heart=>low iimaan=>you make du`aa/stop music=>no more Raan=>Allaah increases your iimaan
So for every act you abandon, the outcome is always positive, mashaa'Allaah.
Does it make sense now, brother?
That's how I understood it.