Avoiding interest when paying off a loan

Q: I would like to perform hajj in the near future so I need to pay off two loans. I have student loans from over a decade ago that I would like to pay off in full. However, I don’t want to pay the interest that has accumulated on these loans. If I can settle to pay just the amount of the original loan, will that be permissible? Also, I have an outstanding loan from a certain company. If the company agrees to let me pay just a percentage to have the entire loan forgiven, is that permissible?

Validity of ghusal with braces

Q: I have a large gap inbetween my front two teeth. I would like to get braces to close this gap. It is not a major medical problem, and does not affect me, but the dentist has said that because of the way my jaw is positioned, my bottom teeth are pushing my top teeth out and therefore the gap will become bigger with time.

1. Is it permissable for me to get braces?

2. Will my ghusl be valid with braces on?

What is izaar?

Q: There is a Hadith in behisti jeor that Rasulullah (sallallahu Alayhi wasallam) said, "May Allah have mercy over the women who wear izaar". What is izaar? How can I put this hadeeth into practice (by wearing what cloth)?

Sajda-e-sahw

Q: Can you please explain uptil when sajda-e-sahw can be done for unintentionally missing out a wajib in the prayer? If a person unintentionally leaves out a wajib, and they have done salaam, can they still do sajda-e-sahw? Also, if a person does not do sajda-e-sahw, and the prayer time has ended, will they have to redo the prayer? I have heard that the prayer will have to be redone for leaving out a sajda-e-sahw as long as its still the prayer time, but after the prayer time has passed, it is not mandatory to redo the prayer, but recommended to. Please if you can explain.

Marital problems

Q: I was married before and have three kids from a previous nikaah. I am now married for 7 months and have no kids. I do all the house work, cook, clean, iron and it's taking a lot of strain one me. I don't have a helping hand and requested to my husband that help me get a helper even if it's 3 days in a week. He refused saying he does not dirty the house, my kids do and said he will never get me a helper. I asked him if was his biological kids make the house dirty would he not pay. He said he will pay if his kids dirty the house. His kids live with his ex-wife and Alhumdullillah he does everything for her and kids, which is the right thing to do. I am depressed because all I do is clean and cook and iron. I don't even have time to go to ta'leem. It's just a mess. Please advise if this is the right thing to say. Even if he doesn't get a helper for me, I will carry on this way but does it have or did he have to tell me in this manner?