Sahih al-Bukhari Book 34, Hadith 19
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."
The Prophet (ﷺ) said, "If a woman gives in charity from her house meals without wasting (i.e. being extravagant), she will get the reward for her giving, and her husband will also get the reward for his earning and the storekeeper will also get a similar reward. The acquisition of the reward of none of them will reduce the reward of the others."
I heard Allah's Messenger (ﷺ) saying, "whoever desires an expansion in his sustenance and age, should keep good relations with his Kith and kin."