Purdah

Q: I have heard that a person who reveals his satr to another person, his salah will not be accepted for 40 years. Is it true?

Q:

1. What is the Islamic ruling, fardh, wajib, sunnah, etc. of covering the women's hair while at home with one's family?
2. What is the reference of the story of Zulaikah the wife of Haroon Ar-Rasheed who used to cover her hair when Azaan is given?

Q: My brother in law always shows anger on me and whenever he sits with others he want to show I am a little girl. He is a regular namazi but his language is bad. My husband is good man. Can you tell me any dua so that my brother in-law can keep quite about me. I am upset and because of him I often do not take my meals.

Q: I have been adopted by my Paternal Uncle (fathers brother) due to him not having any children. My Uncles wife did breastfeed me, making her my Foster Mum. My Question is regarding parda with the following people, and making Salaam and shaking hands with them. Are the following Males, Mahram to me:

1. My Foster Nana (foster mums father)?
2. My Foster Nana's Brothers?

And is Parda required between my Husband and the following females:

1. My Foster Mum?
2. My Foster Nani (foster mums mother)?

*** Both of my Biological Parents are still alive ***

From what I understand, that all relations that are Haraam through Blood are all Haraam through Breastfeeding also. Please shed light on the above Laws, and if any other rules are to be known, please inform me.

Q: Is it permissible to touch a very old gair mahram?

Q: Please can mufti saheb explain the aspect of a women's voice being part of the pardha? Someone has presented arguments that in time of Sahaba this was not found and they used to talk to Nabi (Sallallahu Alayhi Wasallam) and that one of Imam shafi RA teachers was a woman.

Q: If a shop owner ends up being alone in his shop with a female customer, is this counted as impermissable khalwa? (although another customer might enter the shop at any time). Also, in my local library the librarian is a women and sometimes we end up being alone in the library (although others may enter at any time), what is the ruling in this case?

Q: There is a internet friend (married) of mine. We chat, we laugh me mock each other and that’s it, the conversation contains the positive content, we discuss about the things around, the current issues, each other's families. So this is forbidden also?

Q: Is niqaab fardh?

Q: In our maktab after imtihaan can the male ustaads play a soccer match against the elder boys. All the girls small and older and moulana's wives will watch the match. Its only one match.​