Sayyidah Maymunah bint Sa'd (may Allah be pleased with her) said: O Messenger of Allah, give us a ruling: one who does not go out to fight himself but gives his wealth so that fighting may be done with it, will he have a reward, or only the one who goes out to fight? He (peace and blessings be upon him) said: "He will have the reward of his wealth, and the one who goes out will have a reward according to his sincerity."
Hadith Referenceالمعجم الكبير للطبراني / مسند النساء / 21532