(12) بَابُ قَوْلِ اللَّهِ تَعَالَى: {أَنْفِقُوا مِنْ طَيِّبَاتِ مَا كَسَبْتُمْ}
Narrated Abu Huraira:
The Prophet (ﷺ) said, "If a woman gives something (i.e. in charity) from her husband's earnings without his permission, she will get half his reward."
Reference: Sahih al-Bukhari 2066
In-book reference: Book 34, Hadith 19
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 34, Hadith 280