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He is afraid that he may become sick because of being underweight; is he allowed not to fast during Ramadan?

Question: 142274

I am nineteen years old and I weigh 41 kg. It is very easy for me to lose more weight when I fast. Fasting always makes me weak and I start to look pale and debilitated. In addition to that, next week I will start my studies at University, which is about an hour away from where I live. Moreover, the day is very long here in Canada, and I also work during the weekend. My question is: is fasting obligatory in my case? Or is it permissible for me not to fast and to make it up later on, on the days that I think are suitable?.

Praise be to Allah, and peace and blessings be upon the Messenger of Allah and his family.

There is a shar‘i concession which allows breaking the fast
in Ramadan for one who is sick and unable to fast, or one who fears that
he will become sick or is his sickness will get worse. Allah says
(interpretation of the meaning): “whoever is ill or on a journey, the
same number [of days which one did not observe Sawm (fasts) must be made
up] from other days” [al-Baqarah 2:185]. 

Ibn Qudaamah (may Allah have mercy on him) said in
al-Mughni (4/403):

 The healthy person who fears that he will become sick by
fasting is like a sick person who fears that his sickness will get worse
with regard to the concession allowing breaking the fast, because the sick
person is only allowed not to fast for fear of what fasting may lead to of
the sickness getting worse or lasting longer. So the fear of becoming sick
comes under the same category. End quote. 

Al-Zayla‘i said: The healthy person who fears that he will
become sick by fasting comes under the same category as the sick person. End
quote. Tabyeen al-Haqaa’iq, 1/333 

Based on that: 

If fasting will definitely make you sick or will cause you
physical harm because of being severely underweight, then in this case it is
allowed for you not to fast, but you have to make it up when you are able

To decide concerning this matter, it is essential to consult
trustworthy doctors. 

As for merely getting tired or exhausted, or feeling weak
because of fasting, that is not an excuse for not fasting, because fasting
— especially on hot and long days — is not free of some hardship. 

The scholars have stated that those who do hard (physical)
work should start their day fasting, then if they encounter severe thirst or
hunger from which it is feared that harm will result, it is permissible for
them to break the fast, but they must make up the days on which they broke
the fast. It should be noted that study and work are not excuses for not
fasting. Fasting is one of the pillars of Islam and one of the greatest
obligatory duties of this religion. So it is not permissible for the Muslim
to be so heedless about it that he gives precedence over it to study or work
that he has no urgent need to do and which he can do without. 

For more information please see the answer to question no.
43772 and

And Allah knows best.


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