the Messenger of Allah said: "When a woman gives from her husband's home, with a good heart, not to spoil it, then she will get a reward similar to his, for her is the good she intended - and the same is for the trustee."
Jami` at-Tirmidhi Book 7, Hadith 56
← Previous Hadith the Prophet said: "When a woman gives in charity from her husband's house, she will get the reward for it, and for her husband is the same as that, and for the trustee is the same as that. The reward of each them will not be decreased at all by the reward of the other, for him is what he earned, and for her is what she spent."

Jami` at-Tirmidhi Book 7, Hadith 55 Next Hadith → "We would give Zakat Al-Fitr - when the Messenger of Allah was among us - as a Sa of food, or a Sa of barely, or a Sa of dried dates, or a Sa of raisins, or a Sa of cheese. So we did not stop paying it (like that) until Mu'awiyah arrived in Al-Madinah and talked (about it). Among the things he addressed the people with, he said: 'I see that two Mudd of the wheat of Ash-Sham are equal to a Sa of dried dates.' So the people followed that." Abu Sa'eed said: "I will not stop giving it in the manner that I had been giving it."

Jami` at-Tirmidhi Book 7, Hadith 57