The Messenger of Allah ﷺ said, "When she spends..." Ibn Numayr's version says, "When a woman gives food from her husband's house..." Abu Muawiya's version says, "When a woman spends from her husband's house without causing harm, she will have her reward, and he will have the like of that for what he earned, and she will have the like for what she spent, and the storekeeper will have the like as well." Abu Muawiya added, "without anything being diminished from their rewards."
حدثنا أبو معاوية وابن نمير قالا حدثنا الأعمش عن شقيق عن مسروق
قال رسول الله ﷺ إذا أنفقت وقال ابن نمير إذا أطعمت المرأة من بيت زوجها وقال أبو معاوية إذا أنفقت المرأة من بيت زوجها غير مفسدة كان لها أجرها وله مثل ذلك بما كسب ولها بما أنفقت وللخازن مثل ذلك قال أبو معاوية من غير أن ينقص من أجورهم شيء
Its isnad is sahih, its narrators are trustworthy and well-known figures already mentioned. The hadith was narrated by Bukhari 3/293 no. 1425 (Fath), Muslim 2/131 no. 1204, Abu Dawud 2/315 no. 1685, Tirmidhi 3/49 no. 671, who graded it hasan, and Nasai 5/65 no. 2539, all of them in the chapter on zakat.