1661. If a person intentionally and voluntarily commits an act which invalidates the fast, his fast will be invalidated. On the other hand, if it is not committed intentionally, it will not harm his fast. However, if a person in the state of janÁbah goes to sleep, and based on the details that were elaborated in article 1636, does not perform his ghusl prior to fajr adhÁn, his fast will be void.
1662. If a person who is fasting forgetfully commits an act which invalidates his fast, and then thinking that his fast is invalidated, intentionally commits another act that invalidates a fast, his fast will be void.
1663. If something is forced down the throat of a person who is fasting, it will not invalidate his fast. However, if he is duresed to break his fast, like if he is told that should he fail to eat, his family will be harmed or his property will be damaged, and he eats something to fend off the harm, his fast will as a result be invalidated.
1664. A person who is fasting should not venture into an area where he knows or is fairly satisfied that something will be forced down his throat, or he will be duresed to break his own fast. If he does so, and something is forced down his throat, or he is coerced to commit an act which invalidates his fast, his fast will as a result be invalidated. In fact, even if he makes a conscious decision to go but does not end up going to that place, his fast will nonetheless be invalidated.