Abdullah bin Umar (may Allah be pleased with them both) narrates from the Prophet (peace and blessings be upon him) concerning the rights the husband has over his wife: "She should not give anything from his house without his permission. If she does so, he will have the reward and the wife will bear the sin."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الزكاة / 7857