One who is employed to move haraam things such as musical instruments
Question

                My question is that is it permissable for a muslim to work for a piano mooving company were he moves pianos only for the kuffar from 1 place to another?is this a kind of helping in evil or not???Also if he is mooving houshold furniture and there happens to be a piano in the house ,can he moove to piano for them or not.Please give answers with daleels.I await your answer as this is a matter of urgency.
Praise be to Allah.Firstly: 
A piano is a musical 
    instrument, so it comes under the heading of the texts which forbid musical 
    instruments and forbid listening to them. The evidence for that has been 
    explained in the answer to question no.
    5000 and
    96219. 
Whatever is proven to be 
    haraam, it is not permissible to sell it, rent it, carry it or help with it 
    in any way, because that is helping in sin, and Allaah says (interpretation 
    of the meaning): 
“Help you one another in 
    Al‑Birr and At‑Taqwa (virtue, righteousness and piety); but do not help one 
    another in sin and transgression. And fear Allaah. Verily, Allaah is Severe 
    in punishment”
[al-Maa’idah 5:2]
The accountable Muslim is 
    enjoined to denounce this evil, so how can he keep quiet about it and carry 
    it or help to keep it? Allaah says (interpretation of the meaning): 
“Those among the 
    Children of Israel who disbelieved were cursed by the tongue of Dawood 
    (David) and ‘Eesa (Jesus), son of Maryam (Mary). That was because they 
    disobeyed (Allaah and the Messengers) and were ever transgressing beyond 
    bounds.
79. They used not to 
    forbid one another from Al-Munkar (wrong, evildoing, sins, polytheism, 
    disbelief) which they committed. Vile indeed was what they used to do”
[al-Maa’idah 5:78-79]
The curse befell them 
    because they failed to denounce evil. 
Al-Nawawi (may Allaah have 
    mercy on him) said in Rawdat al-Taalibeen (5/194): It is not 
    permissible to be employed to move alcohol from one house to another, or for 
    anything else that is forbidden such as playing instruments and wailing. 
    Just as it is haraam to accept payment for these things it is also haraam to 
    give it. End quote. 
Based on this, working for 
    a piano removal company is haraam, because it involves helping in sin and 
    approving of evil. 
Secondly: 
If a person is employed to 
    move household goods and finds musical instruments among them – apart from 
    the daff – it is not permissible for him to move them, for the reason given 
    above, which is that carrying them and moving them is helping in sin and 
    approving of evil. Even though it seems difficult to refuse to move these 
    instruments, the consequences will be good, if Allaah wills, because if a 
    person gives up something for the sake of Allaah, Allaah will compensate him 
    with something better than it, and the one who prefers the reward of the 
    Hereafter over worldly gains, will inevitably attain worldly gains (from 
    halaal sources). This attitude of his may be the cause of the kaafir’s being 
    guided and wanting to find out about this great religion which makes its 
    followers give up money to seek the pleasure of Allaah. 
We ask Allaah to guide us 
    and you and to make us and you steadfast. 
And Allaah knows best.