Good Character

Q: If I mistakenly, unintentionally or forgetfully done something wrong to someone, something or myself will that count as a sin?

Q: My question is regarding lying on a telephone interview for a university application. I had a telephone interview for computing course. I initially applied for a different course for which I got accepted with an unconditional offer. When I decided to change I had a telephone interview and the Head of department asked me as to why I didn't retake my GCSE Maths Exam as i had a D. I don't know how was it impulsive or due to nervousness I said that I was working full time. So he said ok and asked about my other qualification which is the main one BTEC I.T. He was satisfied and gave me an unconditional offer. So the lie is that I actually have retook my GCSE Exam and Got the same Result. I was certain that I had put it on my original application but it seems I didn't. To my shock I said the lie. I was actually working though pretty much full time. On Registration the Uni only took my BTEC cert. Am I sinful? Will my earnings be Halaal?

Q: If I insulted someone in my mind or heart without speaking it out, am I going to get sin?

Q: Nowadays I am confronting a huge problem. The problem is that I become angry at very small mistakes of others. I can't tolerate anybody elses joke. Sometimes this anger fades away quickly, but sometimes it becomes prolonged. I don't know what to do about it. I am an engineering student, 21 years old. Please grant me a solution to this problem.

Q: Is it right to feel jealous in either study or anything?

Q: How can one repent for backbiting to avoid its punishment in this life and the hereafter? Does one have to inform the person whose gheebat was made and ask him for forgiveness, or is seeking forgiveness from Allah Ta'ala sufficient? 

Q: I am a student and I have friends but when they get good grades I feel a little jealous but when I get good grades, they do the same thing. I don't want to compete with them but they always compare themselves with me. I don't want to get compared but what can I do to avoid this feeling. I don't want to compete with them.

Q: One should not disturb someone without need when they are reading a kitaab, however is it makrooh to talk to someone when they are reading a kitaab?

Q: Person A tells Person B the following joke. He says the memon was in Jahannam when he met his friend. His friend said to him that you were so pious, how did you end up here? The memon replied that I have a place in Jannah, but I put my house in Jannah on rent. Person B laughed at the joke. I am aware that in Surah Tauba that there is a verse which speaks about joking about Allah and his signs and this leading one to come out of the fold of Islaam. In the scenario presented above, do both A and B lose their Imaan and in the process invalidate their Nikah?

Q: What is the punishment if someone insults the Prophet? Will he or she still be hanged to death even if he or she repents sincerely?