question #3 Sahih Muslim 1024a, Book 12, Hadith 101 : What is the role of intention and responsibility in charitable acts according to Islamic teachings?

When a woman gives in charity some of the food in her house, without causing any damage, there is reward for her for whatever she has given, and a reward for her husband for what he earned. The same applies to the trustee. In no respect does the one diminish the reward of the other.