Husband not obliged to pay for his wife's medical bills

Q: I read that it is not an obligation for a husband to pay for his wife's medical bills, and that she must pay for them herself. How can a woman who has not gone to college or worked outside the home due to following Islamic rules get a job that will pay for her medical bill while also being sick? I do not understand how a Muslim women are supposed to cover their own medical expenses when Islam has discouraged them from working their whole lives? 

Becoming a data analyst

Q: I want to become a data analyst, I am choosing a field, I have cherry picked the top most valuable & highest paying field they are:

1. Finance & Banking
2. IT Companies:
3. Pharmaceuticals and Life Sciences

Now I wanna choose a highest rewarding field too.

My question: "Narrated by Ibn 'Abbas (radhiyallahu anhuma): The Prophet (sallallahu alaihi wasallam) cursed the one who consumes riba (usury or interest), the one who gives it, the one who records it, and the two witnesses to the transaction, and he said, 'They are all alike (in sin).'" (Sahih al-Bukhari)

Now if I become a financial data analyst, most probably I may have to record about any such possible riba transactions taken or given by company/banks etc.. Wont I be the sinner

2. Because of that, We decreed upon the Children of Israel that whoever kills a soul unless for a soul or for corruption [done] in the land - it is as if he had slain mankind entirely. And whoever saves one - it is as if he had saved mankind entirely. does it applicable to my role as Pharmaceuticals and Life Sciences data analyst. it may also explore my way to have a Islamic finance field innovation.

3. Data analyst in IT companies play a significant role in developing technology and improving business operations, also it lead to me to gain more salary making me to give charity & other acts.

I would like to have your opinion on the best job role which you think will be with your islamic knowledge.

Authenticity on reading a verse of the Quraan and the Angels wake a person up

Q: What is the reality of this wazeefah? Especially the fact that angels wake a person up?

"I was told a Quranic aayat to recite when you want to wake up for something and by Allah it works!! Every time I've read it I've ALWAYS woken up, whether it be for fajr, work, interview, literally anything you need to wake up for. I recall being told the virtue is that the angels wake you up. I'm not sure how accurate it is according to my memory, but I've never questioned it as I was told by an aalim. But if anyone wants to correct me, please do. This is the aayah: لا يجليها لوقتها إلا هو"

Using antibacterial spray and a cloth to remove impurities from surfaces

Q: I was wondering if it will be permissible to use antibacterial spray such as detol or zaflora to remove najasah on surfaces like doors, door handles and radiators by spraying and then drying with tissue paper.

I also read in a fatwaa that if the spray causes side effects you cannot use it. The sprays I have say they cause eye irritation. Does this mean I can't use it. Can you please respond as I need to know cause it will cause me alot of difficulty cleaning the radiators without spraying them and having to use a wet piece of tissue then a dry one. I also feel if I use a wet cloth I will just spread najasah everywhere.

Meaning of the Hadith "The city of Jerusalem will flourish while the the city of yathrib (Madina) will be in ruins"

Q: In one Hadith it is somehow narrated that the city of Jerusalem will flourish while the the city of yathrib (Madina) will be in ruins. The ruined state of Madina will be when the huge war comes. Please could you explain what the flourishing state of Jerusalem is and ruined state of Madina.