question #1 Sahih Muslim 1024c, Book 12, Hadith 103 : What is the significance of a woman’s charitable spending from her husband’s household in Islam?

When a woman spends (something as Sadaqa) out of the household of her husband without causing any damage, there is a reward for her and for him too like it for whatever he earned, and for her (for the wife) because of her spending (for the sake of Allah), and for the trustee also (there is a reward like it), without any reduction from their rewards.