1750/2 - Abu Hurayrah (may Allah be pleased with him) reported that the Prophet (may Allah’s peace and blessings be upon him) said: “It is not lawful for a woman to fast while her husband is present without his permission, nor to let anyone in his house without his permission.” [Narrated by Al-Bukhāri and Muslim]
1) The permission of a woman’s husband is required before she observes voluntary fast, if he is present, in consideration of his right upon her. But his permission is not required for the obligatory fast, as the Shariah right prevails.
2) It is not permissible for a woman to let anyone whom her husband hates in his house without his permission.
3) Being true servants of Allah Almighty is the best thing that boosts the continuation of a good marital life between the two spouses.