Can he say “Thank you” (as in “No, thank you”) to someone who offers him wine and he does not take it?
Question

                Is it appropriate to add the "thank you" to "No, thank you" when offered something haraam? For instance, if someone were to offer me a glass of wine.
Praise be to Allah.
    The believer should not make friends with anyone but another 
    believer, and not mix with anyone but believers, unless he is mixing with 
    others in order to enjoin what is good and forbid what is evil, or to call 
    people to Allah, or for some worldly purpose such as buying and selling, 
    working, and so on. 

    That is because the Prophet (blessings and peace of Allah be 
    upon him) said: “Do not keep company with anyone but a believer and do not 
    let anyone eat your food but one who is pious.”

    Narrated by al-Tirmidhi (2395); classed as hasan by 
    al-Albaani in Saheeh al-Tirmidhi. 

    And he (blessings and peace of Allah be upon him) said: “A 
    man will follow the way of his close friend, so let one of you look at who 
    he takes as a close friend.”

    Narrated by Abu Dawood, 4833; classed as hasan by al-Albaani 
    in Saheeh Abi Dawood and elsewhere. 

    It says in ‘Awn al-Ma‘bood: 

    i.e., think long and hard about the one whom you take as a 
    close friend. If his religious commitment and character are good, then take 
    him as a close friend, otherwise avoid him because one will be influenced by 
    the attitude and behaviour of one’s friends. End quote. 

    If a person mixes with non-believers because of work, ties of 
    kinship, or unavoidable need, it is not permissible to sit with them when 
    they are committing evil actions. 

    Shaykh al-Islam Ibn Taymiyah (may Allah have mercy on him) 
    said: 

    It is not permissible for anyone to attend by choice 
    gatherings in which evils are committed except in cases of necessity, as it 
    says in the hadeeth: “Whoever believes in Allah and the Last Day, let him 
    not sit at a table where wine is being drunk.” Some people who had drunk 
    wine were brought to ‘Umar ibn ‘Abd al-‘Azeez and he ordered that they be 
    flogged. It was said to him: Among them is one who was fasting. He said: 
    Start with him; have you not heard that Allah says (interpretation of the 
    meaning): “And it has already been revealed to 
    you in the Book (this Qur'ân) that when you hear the Verses of Allâh 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” [al-Nisa’ 4:140]? 

    ‘Umar ibn ‘Abd al-‘Azeez (may Allah be pleased with him) 
    explained that Allah regards the one who is present when evil is committed 
    as being like the one who does it. Hence the scholars said: If a person is 
    invited to a wedding feast in which there are evils such as alcohol and 
    musical instruments, it is not permissible for him to attend it. That is 
    because Allah, may He be exalted, has instructed us to denounce evil as much 
    as possible. If a person attends willingly and does not denounce it, then he 
    has disobeyed Allah and His Messenger by not doing what he was commanded to 
    do of hating the evil and speaking against it. If that is the case, the one 
    who willingly attended the gathering where alcohol was drunk with no 
    necessary reason to do so, and did not denounce the evil as Allah enjoined, 
    is a partner with the evildoers in the evil actions and is regarded as one 
    of them. End quote. 

    Majmoo‘ al-Fataawa, 28/221-222 

    Based on that, your saying to the one who offers you alcohol 
    “Thank you” (as in “No, thank you”)  is contrary to hating and denouncing 
    the evil, because this person will think that he has been kind to you and he 
    will not understand that he has done something wrong by drinking alcohol and 
    offering it to you. 

    If this is a Muslim, then you have to denounce his drinking 
    alcohol and advise him to give it up. If he is not Muslim, then the least 
    you can do is explain to him that you do not drink alcohol because your 
    religion forbids it.  

    For more information please see the answer to question no.
    96662 

    And Allah knows best.