(4) Sexual Intercourse
1- How would sexual intercourse be achieved?
A: It would be achieved by the complete penetration of the glans penis inside the vulva or the anus of a human being or an animal.
2- If a sa`im [fasting person] intended to have sexual intercourse but he did not do it, would this intention invalidate his sawm?
A: This intention is considered like the intention of doing practices or taking things that would break the fast, and the sawm would not be invalidated just by this intention.
3- If a sa`im had sexual intercourse in a state of forgetfulness, what is the ruling regarding his sawm?
A: His sawm would not be invalidated.
4- If a sa`im is forced to have sexual intercourse and becomes deprived of his volition, what is the ruling about his sawm?
A: If he had been really forced to the extend that he is deprived of his volition; his sawm would not be invalidated.
Adopted from the book : "Questions & Answers About Fast Accroding to Ayatollah Khamenei's Fatwa"