Salam Alaykum shaykh. I have a friend who have accepted Islam not long ago. He asks if it is allowed for him that his father who is not a Muslim, buys a house With a loan based on ribaa (usury/interest). And then my friend will buy the house from his father by monthly installment, without ribaa (usury/interest)?

There is a saying that treating people equally unfairly is justice; some people attribute this to the Messenger (blessings and peace of Allah be upon him) and some regard it as if it is a basic principle that cannot be changed. What is the Islamic ruling or how sound is this saying?.

Does diarrhoea make it permissible for the fasting person to break his fast?

A woman became Muslim and lives with her family who are not Muslims, and now they do not object to her being Muslim. She tried to call them to Islam by various means, but to no avail. How should she deal with them in their misguided state? Should she uphold ties with them or limit her relationship with them?.

I am a woman who corresponds with some European and American women via the internet. We have been exchanging gifts and discussing sewing ideas for two years. I have tried to talk to them about Islam, but I stopped for fear that I do not know enough to call them to Islam and I might make some mistakes. What do you advise me to do, should I cut off my ties with them altogether or should I carry on with the aim of calling them to Islam despite the difficulties? and how should I begin? Is this relationship regarded as friendship, and what is the Islamic ruling on it?

What is the ruling on mixing with kaafirs and dealing with them kindly, hoping that they will become Muslim?

I tell non-Muslims that Allah created everything in this universe. They ask me who created Allah? How can Allaah have been there since the beginning? 
How can I answer them?

If a man was praying the sunnah of the fajr [prayer], or other than it, and whilst doing so the [iqaamah for the obligatory] prayer was called, is he required to [promptly] terminate his prayer in order to join the imaam [and congregation] in [the obligatory] prayer, or should he complete his prayer [first]?