Praise be to Allaah.
If a person starts an
obligatory fast, such as making up a missed Ramadaan fast or offering
expiation for breaking a vow (kafaarat yameen), it is not permissible for
him to break the fast without a valid excuse, such as sickness or travel.
If he breaks his fast – with or without an excuse – he has to
make up that day, but he does not have to offer any expiation, because
expiation is only required for intercourse during the day in Ramadaan. See
question no. 49750 .
If he breaks the fast with no excuse, then he has to repent
to Allaah for this haraam action.
Ibn Qudaamah (4/412) said:
If a person starts an obligatory fast, such as making up a
missed Ramadaan fast, or a fast that he vowed to observe, or an expiatory
fast, it is not permissible for him to break the fast. There is no scholarly
difference of opinion on this point, praise be to Allaah.
Al-Nawawi said in al-Majmoo’ (6/383):
If a person has
intercourse during a fast other than in Ramadaan, such as making up a missed
fast, or a fast that he vowed to observe, etc, no expiation (kafaarah) is
required. This is the view of the majority. Qutaadah said: He has to offer
expiation if he broke a fast that he was observing to make up for a missed
Ramadaan fast.
See al-Mughni, 4/378
Shaykh Ibn Baaz was asked in Majmoo’ al-Fataawa
(15/355):
I was fasting one day to make up for a missed fast, but after
Zuhr prayer I felt hungry so I ate and drank deliberately, not because I had
forgotten or was unaware. What is the ruling on this action of mine?
He replied:
You have to complete the fast. It is not permissible to break
the fast if that was an obligatory fast such as making up a missed Ramadaan
fast or a fast that you vowed to observe. You also have to repent from what
you did. Whoever repents to Allaah, Allaah will accept his repentance.
Shaykh Ibn Uthaymeen (may Allaah have mercy on him) was
asked (20/451):
In the past I fasted to make up for what I owed, then I broke
the fast deliberately. After that I made up that fast one day. I do not know
whether that is sufficient or do I have to fast two consecutive months? Do I
have to offer expiation? Please advise me.
He replied:
If a person starts an obligatory fast, such as making up a
missed Ramadaan fast or offering expiation for breaking a vow (kafaarat
yameen), or expiation for shaving during Hajj if he shaved his head before
exiting ihraam, or any other obligatory fast, it is not permissible for him
to break the fast without a valid shar’i excuse. The same applies to anyone
who starts an obligatory action – he has to complete it and it is not
permissible for him to stop it unless he has a legitimate shar’i excuse that
allows him to stop. This woman who started to make up a fast then broke her
fast one day with no excuse and made up that day does not have to do
anything else, but she has to repent and ask Allaah for forgiveness for
breaking an obligatory fast with no excuse.