Wazifa for psoriasis

Q: My dad is suffering from a skin disease called psoriasis and it has been for quite a long time now. My great grandfather and my grandfather had the same disease. Please give me some duas for this disease? Can I ask him to recite the dua of Ayub Alaihi Salam as well? 

Placing a line of bricks around the grave

Q:

  1. Laying a layer of brick stones around a grave for identifying the presence of a grave but not building anything over the grave, is it permitted or not? Does it come under the category of a pukka grave which is prohibited in Shari'ah? We see in Jannatul Baqi that many graves have a demarcation with a layer of rock stones around them.
  2. What is the meaning of the statement that 70000 dead will be taken out from a single grave on the Day of Resurrection? The numbers 7, 70, 700, 70000 are used in Hadiths and in the Quran to describe different situations. Can we take these numbers in the literal sense or do they convey any other meaning?

Superstitions

Q: In India there is rodent which is like a rat. In Gujrati they call it cher. It walks on the sides of the room. I heard you shouldn't kill it because it brings blessings in the house. Is this true?

Safar distance

Q: Maulana Fazlur Rahman Azmi Sahab of Madrasah Arabia Islamia, Azaadville, South Africa writes in his book: "A person becomes a musafir by travelling 54 english miles not 48 miles. Is this correct because I was told a person becomes a musafir by travelling 48 English miles?

Stem cells

Q: Is it permissible in Islam to use stem cells and if the stem cells are from unknown source who is not known to you. Is this allowed and what is the fatwa regarding this?