My brother is very fat and he eats a lot. Every time my mother advises him to eat less, and warns that she will not be pleased with him if he does not listen to her, he says that eating is not haraam and a mother has no right to stop him doing something that is permissible. 

Also, he does not pray in the mosque. Every time my mother asks him, “Why don’t you go?” he says, “Prayer in congregation is a confirmed Sunnah, as Imam Abu Haneefah says.” 

He also delays prayer for a long time after the adhaan, and every time we ask him, “Why don’t you pray on time?” he says, “I do not go beyond the specified time, and the prayers have times that are not limited by the adhaan and iqaamah.” How should we respond to him?.


Praise be to Allaah.

Firstly: 

One of the
greatest blessings that Allaah has bestowed upon His slaves is that He has
subjugated to them everything that is on earth, and He sends down blessings
upon them, and He has permitted to them all good kinds of food, drink,
clothing and so on. 

But Allaah
also condemns everyone who is extravagant in his use of these permissible
things, or who abuses these blessings in ways that harm him or distract him
from that which will benefit his religious and worldly interests. 

Allaah says
(interpretation of the meaning): 

“and eat
and drink but waste not by extravagance, certainly He (Allaah) likes not
Al‑Musrifoon (those who waste by extravagance)”


[al-A’raaf 7:31]
 

Secondly: 

One of the
most dangerous things that may doom the son of Adam to Hell is the desire of
his belly, as the belly is the basis of all other desires and the essence of
all problems and diseases. The Prophet (peace and blessings of Allaah
be upon him) said: “The son of Adam does not fill any vessel worse than his
stomach. It is sufficient for the son of Adam to eat a few morsels to keep
him alive. If he must fill it, then one-third for his food, one-third for
his drink, and one-third for air.” Narrated by al-Tirmidhi (2380), classed
as saheeh by al-Albaani in Saheeh al-Tirmidhi

i.e., it is
sufficient for the son of Adam to eat only that which will keep him alive,
and no more than that. If he insists on having more, then he should eat only
that which will fill one-third of his stomach, and another third for drink,
and leave one-third for air. He should not consume more than that amount. 

See:
Tuhfat al-Ahwadhi

The wise men
of the Jaahiliyyah and of Islam were praised for eating little. 

Haatim
al-Taa’iy said: 

If you give
your stomach and your private part what they ask for, you will end up
regretting it. 

Fath
al-Baari
(9/669) 

If a person
eats so much food that it harms him, this is haraam. 

The scholars
of the Standing Committee were asked: Is eating too much haraam? 

They
replied: 

Yes, it is
haraam for a Muslim to eat so much that it harms him, because that is a kind
of extravagance and extravagance is haraam, because Allaah says
(interpretation of the meaning): 

“and eat
and drink but waste not by extravagance, certainly He (Allaah) likes not
Al‑Musrifoon (those who waste by extravagance)”


[al-A’raaf 7:31]
. End quote. 

Fataawa
al-Lajnah al-Daa’imah
(22/329). 

Warnings
have been narrated from the Prophet (peace and blessings of Allaah be
upon him) about eating one’s fill too often, and that this is a cause of
suffering from hunger on the Day of Resurrection. It was narrated that Ibn
‘Umar (may Allaah be pleased with him) said: A man burped in the presence of
the Messenger of Allaah (peace and blessings of Allaah be upon him) and
he said: “Keep your burps away from us, for the one who eats his fill the
most in this world will be hungry for the longest time on the Day of
Resurrection.” Narrated by al-Tirmidhi (2015); classed as saheeh by
al-Albaani in Saheeh al-Tirmidhi

It was also
narrated by Ibn Abi’l-Dunya,  al-Tabaraani in al-Kabeer and
al-Awsat
and by al-Bayhaqi, from Abu Juhayfah, and they added: Abu
Juhayfah did not eat his fill until he departed this world; if he ate
breakfast he would not eat dinner and if he ate dinner he would not eat
breakfast. According to a report narrated by Ibn Abi’l-Dunya: Abu Juhayfah
said: I have not filled my stomach for thirty years.  

See:
Tuhfat al-Ahwadhi

The way to
stop eating too much is to stop gradually. If a person is used to eating a
lot and he goes in one fell swoop to eating little, he will become weak and
his appetite will increase. So he should reduce it gradually, by eating less
and less of his usual food, until he reaches a moderate intake of food. 

Thirdly: 

If prayer in
congregation is Sunnah mu’akkadah (a confirmed Sunnah) or prayer at the
beginning of its time is better, that means that we should be eager to do
that, not that we may neglect it or be heedless about doing it. We should
praise Allaah for having prescribed the ways of guidance and the rituals of
worship for us, and we should learn from the experience of our predecessors
of the first generation. 

Ibn Mas’ood
(may Allaah be pleased with him) said: Whoever would like to meet Allaah,
may He be exalted, tomorrow as a Muslim, let him regularly offer these
prayers where the call to prayer is given, for Allaah has prescribed the
Sunnahs of guidance to your Prophet (S) and they (the prayers) are among the
Sunnahs of guidance. If you pray in your houses like this one who stays away
from the mosque prays in his house, you will have forsaken the Sunnah of
your Prophet, and if you forsake the Sunnah of your Prophet you will go
astray. There is no man who purifies himself and purifies himself well, then
he goes to one of these mosques, but Allaah will record one good deed for
him for every step he takes, and will raise him in status one degree
thereby, and will erase one bad deed thereby. I remember when no one would
stay away but a hypocrite whose hypocrisy was known, and a man would come
staggering between two others in order to stand in the row. Narrated by
Muslim (654). 

This is
based on the assumption that prayer in congregation is Sunnah mu’akkadah.
But we have explained that it is obligatory, and quoted the evidence for
that, in the answers to many questions. See questions no.
120,
8918,
10292,
21498 and
40113

We ask
Allaah to help us and you to do that which He loves and which pleases Him. 

And Allaah
knows best.