Gifts

Q: Please advise if the following store credit and voucher operations are permissible: (1) "Earn credit by referring your friends to shop on [online store]. Simply invite friends to sign-up via email and you will earn R100 store credit when each one spends R200 or more for the first time." (2) "Employees will be paid via vouchers that can be used to purchase commodities from [so-and-so] store. Vouchers cannot be redeemed for cash. It is not possible to use such vouchers at a store other than the one stipulated."

Q: I have a question regarding my current situation. I am a full time student at a madersah and I have a mental disability. I am a revert and my parents (who are non muslims) fund my medication. I just recently remembered that they have health insurance and that they have been using it. I was aware of it this whole time but I totally forgot it was harram. In my case, is it possible to continue this or should I stop taking medication from them?

Q: An apa teaches some kids for free. It was made clear also that no gifts will be accepted. One of the students mother is an optometrist, who the apa uses. Apa insists on her taking payment for the glasses etc but she refuses, probably based on the fact that her children are being taught maktab by the apa. Is it permissible for the apa to accept this as a gift?

Q: Please advise regarding gifts to the new born baby, if unclear as to whom gift is addressed to, if the gift is returned and parents buy other things for the baby is this permissible?

Q: There is a custom in some communities, that is; when we give some prepared food to our neighbor or somebody they always give back something which they prepared, in the same plate in return. The problem is, when nothing is found in their home they refuse to return our plate empty and say that, "I will give later"because of custom. Is this an act of sunnah to give back something as hadya in the same plate when one receives hadya from a neighbor or someone else?

Q: In some places when an aalim does a bayan, the people and masjid committee collect money and give it to the aalim as hadya. Is it permissible for him to receive that amount because it is his duty to educate people islamically?

Q: A friend of ours is unemployed and dependent financially on the government but is actively looking for work. He has a mother who repeatedly tells him that she will buy him a house, which gives him hope because he can live on the rental yields and not be in fear of eviction while he continues to search for a job. He will also be in a better position to transfer his mother's house to his name so as to avoid inheritance tax. The problem is that her wealth is very dubious and most likely gained in a haram way. For some time now she has been receiving benefits from the government but recently she has also been renting out rooms in her house. How she amassed her wealth is another story and cannot be explained by the benefits she receives but from what things she did (and probably still does) like take interest from the banks, working in betting  establishments, and committing refund fraud. My questions are:

1. Can he receive a gift from his mother?
2. Can he inherit from her?

Q: Is this also considered as refusing a gift? When a person informs the person in advance who wants to give a gift that please don't bring any gift we will not receive it?

Q: If when giving a gift a person puts a condition that the موهوب (the person given the gift) can only spend on a specific thing then is the condition valid?

Q: If someone feeds you something, or gives you clothing that they have stolen. Will you be sinful in using it if you do not know for sure that they stole it?