Fasting

Q: I am a student in Saudi Arabia studying in a private school in Dammam. Our school recently changed their examination dates. The problem is that Ramadhaan is during these days. My question is that is it permissible for a student to skip 2 or 3 days of fasting for exams? I might not be able to concentrate on an empty stomach during the exam and while studying for it.

Q: Is fasting every Thursday right or is it a bidah?

Q: If one swallows a food particle stuck between one's teeth while fasting, will the fast break?

Q: During the month of Ramadhaan, once I had broken my fast through eating. What is the Shar'ee ruling in such a case?

Q: If a person commits the sin of masturbation during the fast of Ramadhaan, does kaffarah become wajib? If not, why is this so?

Q: If a person is fasting a qadha fast of Ramadhaan and breaks it intentionally, is the 60 days kaffarah due?

Q: Regarding kaffaarah fast. It says for the amount of fasts broken a person has to make kaffarah and qadha. So if a woman broke say for example seven fasts, must she do one kaffaarah (60days) plus 7 qadhas or just 6 days kaffarah and one qadha?

Q: If a person is doing dialysis while fasting, will his fast break and can he fast during the month of Ramadhaan if he has to go for dialysis?

Q: Is it true that during fasting if you feel a piece of food stuck in your teeth, then you can swallow it and it won't break your fast? 

Q: Someone is doing kafaarah for ramadan fast. She is on her fifteenth fast. However when she was on her fifth fast she had broken her fast two minutes before iftaari but she carried on doing her kafaarah. What is the conclusion? Will her kafaraah start again from after that day or does she completely have to start all over again?