Islamic Law delineates nine acts which invalidates a fast, two of which
are overtly sexual: Sexual intercourse, and; Masturbation which means
self abuse, resulting in ejaculation.
Sexual intercourse invalidates the fast, even if the penetration is as
little as the tip of the male organ, and even if there has been no
If the penetration is less than the tip of the male organ, so that it
cannot be said that intercourse has taken place, also if no ejaculation
takes place, the fast does not become invalid. This applies to both,
circumcised and uncircumcised men.
If a person commits sexual intercourse intentionally and then doubts
whether penetration was upto the point of circumcision or not his fast,
as an obligatory precaution, becomes invalid, and it is necessary for
him to observe its qadha. It is not, however, obligatory on him to give
If a person forgets that he is observing fast and commits sexual
intercourse or he is compelled to have sexual intercourse in a manner
that makes him helpless, his fast does not become void. However, if he
remembers (that he is observing fast) or ceases to be helpless during
sexual intercourse, he should withdraw from the sexual intercourse at
once, and if he does not, his fast becomes void.
If a person, who is observing fast, performs masturbation (Istimna), his
fast becomes void (The explanation of istimna has been given in rule
If semen is discharged from the body of a person involuntarily, his fast
does not become void.
Even if a person observing fast knows that if he sleeps during the day
time he will become Mohtalim (i.e. semen will be discharged from his
body during sleep) it is permissible for him to sleep, even if he may
not be inconvenienced by not sleeping. And if he becomes Mohtalim, his
fast does not become void.
If a person who is observing fast, wakes up from sleep while ejaculation
is taking place, it is not obligatory on him to stop it.
A fasting person who has become Mohtalim can urinate even if he knows
that by urinating the remaining semen will flow from his body.
If a fasting person who has become Mohtalim, knows that some semen has
remained in his body and if he does not urinate before taking Ghusl, it
will come out after Ghusl, he should on the basis of recommended
precaution, urinate before taking Ghusl.
A person who indulges in courtship with an intention to allow semen to
be discharged, will complete his fast and also observe its qadha, even
if semen is not discharged.
If a fasting person indulges in courtship without the intention of
allowing the semen to be discharged, and also, if he is sure that semen
will not be discharged, his fast is in order, even if semen may be
discharged unexpectedly. However, if he is not sure about the discharge
and it takes place, then his fast is void.
If a fly enters the throat of a fasting person, it will not be necessary
to throw it out if it has gone deep down the gullet, and his fast will
be valid. But if it has not descended deep down, it must be coughed out,
even by vomiting, if it is not harmful to do so. If one does not do so,
fast will be void.
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