Selling cards to crack the codes blocking permissive channels
Question

                A person bought a “digital receiver”, but the issue here is not whether buying this equipment is permissible. It came with a card for cracking the codes blocking access to permissive channels. Is it permissible for him to sell it, knowing that the purchaser has stipulated the condition that he be allowed to buy the card along with the equipment?
Praise be to Allah.
    Everything that is used in a haraam manner, it is not 
    permissible to sell it. It is not permissible to buy or sell this equipment, 
    or to give it as a gift, because doing so is helping another to see haraam 
    things and commit immoral actions – Allaah forbid. It involves cooperating 
    in the evil which Islam came to forbid. Allaah says (interpretation of the 
    meaning): 

    “but do not help one another in sin and transgression”

    [al-Maa’idah 5:2]

    What he has to do is to destroy that haraam equipment which 
    is one of the greatest means of spreading corruption and immorality in 
    society. Whoever works to spread this equipment is subject to the warning of 
    Allaah. Allaah says (interpretation of the meaning): 

    “Verily, those who like that (the crime of) illegal sexual 
    intercourse should be propagated among those who believe, they will have a 
    painful torment in this world and in the Hereafter”

    [al-Noor 24:19]

    The questioner and all Muslims should realize that whoever 
    helps to spread corruption by facilitating its ways and means will carry the 
    sin of everyone who deviates and is affected because of that. It is an 
    ongoing evil deed which may continue even after he dies. This is a serious 
    matter to which we must pay attention. The one who tells others to do good 
    is like the one who does it, and the one who tells others to do evil is like 
    the one who does it. 

    It was narrated that Jareer ibn ‘Abd-Allaah said: “Some 
    Bedouin people came to the Messenger of Allaah  (peace and blessings of 
    Allaah be upon him) wearing wool, and he saw that they were in a bad state 
    and in need. He encouraged the people to give charity to them but they were 
    too slow in responding, until it could be seen in his face (that he was 
    upset). Then a man from among the Ansaar brought a purse of silver, then 
    another came, then people came one after another, until signs of happiness 
    could be seen on the Prophet’s face. The Messenger of Allaah  (peace and 
    blessings of Allaah be upon him) said: ‘Whoever starts something good in 
    Islam and others do it after him, there will be recorded for him a reward 
    equal to that of those who do it, without that detracting from their reward 
    in the slightest. And whoever starts something bad in Islam and others do it 
    after him, there will be recorded for him a burden of sin equal to that of 
    those who do it, without that detracting from their burden in the 
    slightest.’”

    (Narrated by Muslim) 

    Al-Nawawi said: 

    “The Prophet  (peace and blessings of Allaah be upon him) 
    said, ‘Whoever starts something good…’ and ‘whoever starts something bad…’ 
    According to another hadeeth he said, ‘Whoever promotes guidance…’ and 
    ‘whoever promotes misguidance…’ These two ahaadeeth clearly state that it is 
    mustahabb to start good things and that it is forbidden to start bad things. 
    Whoever starts a good thing will have a reward equal to that of everyone who 
    does it until the Day of Resurrection, and whoever starts a bad thing will 
    have a burden of sin equal to that of everyone who does it until the Day of 
    Resurrection; whoever promotes guidance will have a reward equal to that of 
    those who follow him, and whoever promotes misguidance will have a burden of 
    sin equal to that of those who follow him – regardless of whether that 
    guidance or misguidance is something that he initiated or that someone else 
    started before him, and whether that is done by teaching knowledge, or it is 
    an act or worship, or some kind of etiquette, or something else. 

    The words of the Prophet  (peace and blessings of Allaah 
    be upon him), ‘and others do it after him’ refer to when a person starts 
    something, whether others do it after him during his own lifetime or after 
    his death. And Allaah knows best.”

    (Sharh Muslim, 16/226-227) 

    So he must hasten to repent to Allaah, and destroy these 
    kinds of machines. The Muslim must use the intelligence and wisdom that 
    Allaah has given to him to spread goodness and put a stop to evil, and not 
    to crack codes etc., or to spread evil. It is not permissible to trade in 
    any means that leads to evil. And Allaah is the One Whose help we seek.