Q: If a debtor comes to pay his debt two years after purchasing goods from us, do we have the right to charge inflation on the amount according to the rate of inflation?

Q: What is kuffarah for an unfulfilled Qur'an oath? I took an oath of not missing salaah with a sheikh online who gave me zikr for weak memory and doing good in medical school. I did the zikr for a while and then stopped it. I totally forgot about the oath. I do pray but not regularly? So now I am in last year of my medical school. I have a lot of prayers to make up. Can you please guide me about the kuffarah? Do I have to make up all the prayers and is there a kuffarrah along with it? 

Q: Is the Tableegh Jamaat good or bad?

Q: Can one request as mahr that the husband will never marry another wife while he is married to her?

Q: Is the face of a woman auwrah? Is it compulsory to cover the face in front of men. In my husbands home, my husband's brother and father live with us. How can I cover my face the face whole time?

Q: Is old mutual and oasis unit trust accounts halaal? I am a student looking to invest my money. I previously sent a question but I did not receive a relevant answer.

Q: One of my friends want to ask about a problem related to her salaah. Her usual periods have always been 7 days max. But now she is using contraceptive pills and due to pills the periods prolonged to 10 days or more (i.e after 7 days not proper bleeding or brown discharge but yellowish or little greenish without becoming clear). She starts salah after 10 days as she had read that 10 days are the max limit. Should she start salaah after 7 days or 10 days as its clearly due to the medication not natural because if she leaves the pill it goes back to 7 days.

Q: Can we (muslims) pray for a Hindu? Like may Allah give him progress? O can we only pray for his hidayat not other than that?

Q: My second question is that can I put all clothes (paak and napaak) into the washing machine together or I have to wash them separately?

Q: Is it correct to write R.I.P (may he rest in peace) for a non-Muslim after his demise? What does Islam say about this?