What is the ruling on uttering the intention of fasting?

Is it permissible for me to bequeath my jewelry to my mother without my husband, knowing that I have no children?

A sick person intended to fast another obligation in Ramadan, does it count for him?

A lady, before her death, bequeathed something to her sister and informed her that she would not forgive her if she did not carry out what she had bequeathed. However, the sister is unable to execute the will. Is she sinful for that?

Is it permissible to fast the missed days with a general intention?

A man passed away a year ago, leaving behind a married son with three children, who has been detained for eight years, and it is unknown whether he is alive or dead. Before his death, the father verbally bequeathed the shop to the three children of the missing son. What is the ruling?

What is the ruling for someone who intends to fast two different things, equal in obligation and duty?

A man passed away leaving a sum of money, and he always said this money is for my little daughters. He was married to two wives: the first one is deceased and has three daughters who are the little ones, and the second one has seven older married daughters and four sons. The sons have given up their share to their little sisters, while the married daughters are objecting, knowing that their situation is excellent. How should the division be in this case?

What is the ruling for someone who intends to make up some of Ramadan and volunteer?