He works as a security guard in a store that sells alcohol; what is the ruling on his work?

There is nothing wrong with working as a
security guard in a supermarket, but if this store sells haraam
things such as alcohol and pork, it is not permissible to work there either as
a guard or a cashier, because that implies approval of evil and because of what
you mention of helping to transport it. This is emphatically forbidden because
of the report narrated by Abu Dawood (3674) and Ibn Maajah (3380) from Ibn ‘Umar who said: The Messenger
of Allah (blessings and peace of Allah be upon him) said: “Allaah
has cursed khamr (alcohol) and the one who drinks it,
the one who pours it, the one who sells it, the one who buys it, the one who
squeezes it, the one for whom it is squeezed, the one who carries it and the
one to whom it is carried.” Classed as saheeh
by al-Albaani in Saheeh
Abi Dawood. For
more information concerning the ruling on carrying and transporting alcohol for
someone else, please see the answer to question no. 96739

Based on that, you should look for a job
that is befitting for the Muslim who is proud of his religion, follows its
commands and heeds its prohibitions. You should take measures to find
permissible ways of earning a living. Allah, may He be exalted, says
(interpretation of the meaning):

“And it has already been revealed to you
in the Book (this Quran) that when you hear the Verses of Allah being denied
and mocked at, then sit not with them, until they engage in a talk other than
that; (but if you stayed with them) certainly in that case you would be like
them”

[an-Nisa’ 4:140]

“And when you (Muhammad SAW) see those
who engage in a false conversation about Our Verses (of the Quran) by mocking
at them, stay away from them till they turn to another topic. And if Shaitan (Satan) causes you to forget, then after the
remembrance sit not you in the company of those people who are the Zalimoon (polytheists and wrongdoers, etc.)”

[al-An ‘am
6:68]

“And those who do not witness falsehood,
and if they pass by some evil play or evil talk, they pass by it with dignity”

[al-Furqaan 25:72].

Shaykh Ibn Baaz (may Allah have mercy
on) said: “Falsehood” includes all kinds of evil. That includes shirk
(associating others with Allah), kufr (disbelief),
the festivals of the mushrikeen (those who associate
others with Allah), gathering to drink alcohol and smoke, songs, musical
instruments, movies and other evils. Something similar was stated by al-Haafiz Ibn Katheer
in his commentary on this verse.

End quote from Majmoo‘ al-Fataawa, 27/429

Shaykh Khaalid ibn ‘Ali al-Mushayqih (may Allah preserve him) was asked about working
in the management of a hotel that sells alcohol. He replied:

There is no doubt whatsoever that the
one who welcomes guests in such a hotel and prepares accommodation for them is
a partner in that sin. I advise the brother to keep away from that and to try
hard to look for permissible work even if it brings a lower income.

“And whosoever fears Allaah
and keeps his duty to Him, He will make a way for him to get out (from every
difficulty).

3. And He will provide him from
(sources) he never could imagin”

[al-Talaaq 65:2-3].

He should try hard to look for
permissible work and when he finds that he should move to that job.

End quote from a fatwa by Shaykh Khaalid ibn ‘Ali al-Mushayqih (on the
Internet).

For more information please see the
answer to question no. 96739

To sum up, it is not permissible for you
to work in these and similar places even if you need to work. For more
information please see the answer to questions no. 82886 and 31781

You have to offer a great deal of du‘aa’ (supplication) to Allah and beseech Him, for He is
the One in Whose hand are the stores of heaven and earth and He is able to help
you and make things easy for you.

For more information on the means that
help to bring a response to du‘aa’, please see the
answer to question no. 5113

And Allah knows best.