Allah's Messenger (ﷺ) said, "It is not lawful for a lady to fast (Nawafil) without the permission of her husband when he is at home; and she should not allow anyone to enter his house except with his permission; and if she spends of his wealth (on charitable purposes) without being ordered by him, he will get half of the reward."
Sahih al-Bukhari Book 67, Hadith 129
← Previous Hadith The Prophet (ﷺ) said, "If a woman spends the night deserting her husband's bed (does not sleep with him), then the angels send their curses on her till she comes back (to her husband).

Sahih al-Bukhari Book 67, Hadith 128 Next Hadith → The Prophet (ﷺ) said, "I stood at the gate of Paradise and saw that the majority of the people who entered it were the poor, while the wealthy were stopped at the gate (for the accounts). But the companions of the Fire were ordered to be taken to the Fire. Then I stood at the gate of the Fire and saw that the majority of those who entered it were women."

Sahih al-Bukhari Book 67, Hadith 130