A home, or domicile, is a living space used as a permanent or semi-permanent residence for an individual, family, household or several families in a tribe. It is often a house, apartment, or other building, or alternatively a mobile home, houseboat, yurt or any other portable shelter.
No, there is no "necessity" for the husband to work outside. The husband can work from home, or maybe due to circumstances be unemployed.
In regards to your question, there are two important points:
1. In Islam, it is wajib for the husband to cover expenses, as nafaqah is the husband's duty. If the wife wishes to pay for things, it is not her shar'i duty, and it is out of her goodness.
2. For the long term, it will not be good or mentally healthy for the husband to be at home all the time, with no work, or future ambitions, or being occupied with at least something useful for himself, his family or for the community. Therefore, it would be advisable that the husband somehow keeps himself busy in this case.
With prayers for your success.
If it would be within a reasonable range of time after the entering of the prayer time, then yes you can wait, and you will receive the reward of prayer on time, and also jama'ah prayer.
However, if there will be an extensive delay, then it is better that you pray on time, and receive its abundant reward.
And Allah knows best.
Your wife has misunderstood the Islamic rule in this matter. Mahram is the person who is permanently forbidden for marriage with her under any circumstance for life e.g. her real brother , real uncle, real father, father in law, her son and son in law. Her sister's husband is not permanently forbidden to marry her, but only when her sister is his wife. If she dies, God forbid, or if she is divorced from him, marriage will be then allowed between this man and any of the unmarried sisters of his ex-wife.
Her sister's husband is not Mahram at all and must observe full Hijab in front of him like any other non Mahram man.
It is very important for your respected wife to educate herself about the definition and rulings related to maḥram/non-maḥram cases.
Unfortunately she is misinformed, and has only half of the facts correct.
In Islam, a man cannot marry two sisters at one time, but this does not mean that the wife's sister becomes maḥram to the husband, nor does it mean that the sister's husband becomes maḥram to the wife's sister.
So, although he cannot marry his sister's wife as long as he is married to his wife, it still does not mean that she becomes maḥram to him.
It is still haram for him to see her without hijab, or look at her with lust, or shake her hand, or be alone with her, and so on.
This is a view that all our jurists have.
As for the case of her staying at their home, if all other shar'i matters are observed, yes she can.
And Allah knows best.
Yes, it is allowed if it is necessary.
Rules of Gheebat are same but if the matter is related to your children or any one who is under your responsibility, you can discuss the matter to avoid them harm or risk.
A husband must provide his wife with a suitable accommodation as this is one of her rights. If she agrees to live with the in-laws then that is fine however if living with in-laws creates problems and a lack of privacy, then the husband should get separate accommodation.
May Allah grant you success
It is recommended to always face Qibla while sitting, eating, resting, reading, etc except when you are in the toilet then it becomes Haraam to face Qibla.
If you have the option, it is good to make the entrance door facing Qibla as well.
Muslim woman is not only allowed but also been encouraged to serve the community in every possible field , obviously with observing full Hijab. Pious ladies like Lady Fatimah, Lady Zainab , Lady Khadija hare best examples.
1. Controlling our bad behaviour needs reasonable will power based on the facts of the harm and damage of such behaviour, and the benefits of good behaviour.
2. We need to see how harsh behaviour makes the person unliked even by his own family members, while good behaviour makes the person liked by almost all people who know him.
3. It is good to recite Quranic Du'a for making our chest pleasant and not narrow. ( RABBI ESHRAH LI SADRI WA YASSIR LI AMRI) رب اشرح لي صدري ويسر لي أمري
4. It is mentioned in books of Akhlaq that when a person becomes angry, he should look at a mirror to see himself while being angry. He will see how ugly he looks when he is angry and this can cool him down and make him avoid being angry.
5. It is also mentioned in many Hadeeths to deal with people in the same way which you want them to deal with you. Bad behaviour from you with others can never be accepted by you if it comes from others to you.
6. Repeating Estighfaar and Salawaat and LA HAWLA WALA QOWWATA ILLA BILLAH is very useful to make our Akhlaq better if we recite it with understanding specially during the night and more specifically during Sojood.
7. It is also good to remember the Hadeeth: Deal with people in a way that if you are away from them, they will long to meet you, or if you die, they will weep on you.
8. The Prophet Muhammad (SAWA) said: Best of you are the best to their family, and I am the best to my family.
Yes you can continue to pay Khums each year despite having a mortgage and adjust the monthly mortgage amount as expenses.