Nikaah & Marriage Issues

Upbringing of children

Q: The children of someone brought up with the teachings of religious duties upto reading the Holy Qur'an texts in Arabic and reading salaah only. Then they proceeded towards worldly education wholeheartedly. Now they are mature but don't perform ritual services punctually though parent advise them frequently.

Is it the false of parent ? What would be the condition of parent in the eye of Allah hereafter? Would the parent sanction punishment as if they didn't taught the children completely. What should they do now?

Equality between wives living in different countries

Q: Presently I have two wives. I married with my first wife while I was studying in Turkey and she got official status of my wife in the online government system in Turkey. I have married again a couple months back. Now I got a job in Turkey, where I can take my first wife only (since she is registered there and two wives are not allowed in Turkey) and cannot take my second wife due to the given reason. I am confused as to what to do?

If I take my first wife only and visit Pakistan in the holidays or call her on a tourist visa off and on, will this be fine and justified? Please advise me as to what I should do so that I may not become sinful?

Adoption

Q: Is it okay to adopt a child (a baby girl) from a poor single mother (the father died) who has other kids as well? She is not able to financially provide for the family well.

I understand the mahram and non-mahram restrictions.

Also, I know that we cannot change the father and family lineage of the adopted child. Won't it be a sin for me and my wife that we are separating a child from her siblings and mother as we live in a different continent?

Treating one's children equally

Q: Please advise on the following:

A father has three children. A daughter and two sons. One son is married.

The father owns a business and both the sons work for the father, while the daughter helps out occasionally.

For the son that is married, the father gave them a house, pays for their water, lights, car payments, fuel, phone payments, etc. The father also pays for numerous holidays and gives them spending money for the holidays. The son is then given a large salary at the end of every month. The father in law is also required to pay for all the daughter in laws wants.

The other son and daughter both live with the parents still and thus the basic food and housing needs are taken care of. The unmarried children are given an allowance which they use for any extras such as clothing, car payments, holidays, hobby's, etc. This often leads to a lot of conflict in the family.

My question are as follows:

1. In a case like this, is the father being fair and just to his children?

2. Is there any difference in providing gifts, or support to the married son and unmarried son/daughter?

3. Is it compulsory for the daughter to work in the business to be given the same as the son while the parents are alive?

4. If the father spends on his wife (mother), is it compulsory for the daughter in law to receive the same?

5. Is it compulsory for the husband to provide the wife with an allowance? (not to be used for any households expenses or personal needs)

6. What obligations do the parents have towards the daughter in law with regards to financial support for needs and luxuries?

7. Is it the parents responsibility to buy and pay for the married son's house, car for the daughter in law, supporting the children on the grounds that he is working in the business and is entitled to it? (this excluding a monthly salary)

Do the sons from a previous marriage become mahram to the daughters of the second marriage?

Q: In the Hanafi Madhab, a man has 2 sons and 1 daughter from his previous marriage. He divorces their mother and marries a woman which he then has 2 daughters with.

1. Do the sons from the previous marriage become mahram to the 2 daughters of the 2nd marriage?

2. Do the sons qualify to be mahram to their step mother?