Assalaamu alaikum,
Mmm... (pensively) I don't really think about rewards much. Mostly, I just do what feels right, without thinking much at all. (smile) I guess it could be argued that I get a reward right there and then, because doing something that makes you feel balanced and whole inside... well, it feels good!
But sometimes, it does happen that I don't want to do something, even if it feels good, because it is inconvenient, or I am feeling lazy. And then I may think to myself do it because God Loves that. And that can help motivate me. (smile) But again, it could be argued that this is a reward too. When you do something for someone you love, it makes you feel good inside, too.
(smile) But sadaqa is not just about giving money or stuff. It's also doing good deeds, from visiting the sick to offering someone a smile. (smile) Actually, I think that most sadaqa is not about material goods.
(laugh) And I can definitely say that I almost never think about getting a reward for smiling at people!
(twinkle) It just feels good.
May Allah, the Loving, Help us to share His Gifts with one another.