He was offered a large fee to receive money in his account
Question

                I was offered a big amount of money, an unimaginable amount, to receive a big amount of money to my bank account, and then send it to another account. The profit I was offered versus doing this is very alluring. That person does not accept my question about where this money came from, but I know him well. What is the ruling on this?.
Praise be to Allah.
    Firstly: 

    You should have told us the source of the money – is it 
    halaal or haraam, so long as you know for sure. 

    Secondly: 

    If the source of the money is haraam, such as drugs for 
    example, then it is not permissible for you to accept this fee, because it 
    is a means of spreading corruption and making haraam things easily 
    available, and concealing evil. This is a kind of money laundering and it is 
    not permissible to help in that, because 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]

    If you do not know the source of the money, you should not do 
    this thing unless the person tells you what the source of the money is and 
    why he is seeking your help. If it becomes clear that the matter is free of 
    any haraam elements, then it is permissible for you to help him. 

    We should also point out that the method mentioned may also 
    be a means of deceiving and stealing. 

    And Allaah knows best.