Ruling on voting for singers via mobile phone
Question

                I voted via mobile phone for a female singer so that she could win the title. What is the ruling on that and what is the expiation for it?.
Praise be to Allah.
      Firstly: 

    The evidence from the Qur’an and Sunnah, and the comments of 
    the Sahaabah (may Allah be pleased with them), indicates that singing 
    accompanied by music is haraam. This has been discussed previously in the 
    answers to questions no. 5000 
    and 43736. 

    As it is proven that singing and music are haraam, the Muslim 
    should hate that which Allah and His Messenger hate and tell others not to 
    do it. 

    The Muslim should tell singers not to commit this sinful 
    action, because the Prophet (blessings and peace of Allah be upon him) said:
    “Whoever among you sees an evil action, then let 
    him change it with his hand [by taking action]; if he cannot, then with his
    tongue [by speaking out]; and if he 
    cannot, then with his heart – and that is the weakest of faith.” 
    Narrated by Muslim. 

    Voting via mobile phone for a singer so that she can win the 
    title involves a number of things that are forbidden according to 
    sharee‘ah: 

    1. 

    It implies approval of sin, and approval of sin is itself a 
    sin. Al-Qurtubi (may Allah have mercy on him) said: “Approval of sin is 
    itself a sin, hence both the one who does it and the one who approves of it 
    are included in the punishment for sin and are both doomed.” 

    Tafseer al-Qurtubi, 5/418 

    2. 

    It is failing to forbid what is evil. Al-Nawawi (may Allah 
    have mercy on him) narrated that there was scholarly consensus that 
    enjoining what is good and forbidding what is evil is obligatory.

    Sharh Muslim, 9/22 

    3.

    It is encouraging singers in their sinning and their 
    disobedience towards Allah, may He be exalted. Allah has forbidden us to 
    help the sinner in his sin, as He 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]. 

    4.

    It involves spending money, whether a small amount or a great 
    amount, in disobedience towards Allah, and “The feet of the slave of Allah 
    will not move [on the Day of Resurrection] until he is asked about five 
    things: his wealth, from where he acquired it and on what he spent it…”

    Narrated by al-Tirmidhi, 2417; classed as saheeh by 
    al-Albaani in Saheeh Sunan al-Tirmidhi. 

    5.

    Taking an interest in these foolish programs distracts the 
    Muslim from what is useful to him in both religious and worldly terms, and 
    it distracts from what is really in his interests, and it distracts him from 
    Allah, may He be exalted. 

    Secondly: 

    With regard to the expiation for the one who does that, there 
    is no expiation except that he has to repent, which means: regretting what 
    he has done, giving up participating in such programs, and resolving not to 
    do that again. 

    He should also strive to do righteous deeds so that Allah 
    will accept his repentance. Allah, may He be exalted, says (interpretation 
    of the meaning):
“And verily, I am indeed 
    forgiving to him who repents, believes (in My Oneness, and associates none 
    in worship with Me) and does righteous good deeds, and then remains constant 
    in doing them (till his death)”
[Ta-Ha 20:82]. 

    And Allah knows best.