No it is not kufr but you are sinful for approving it!

If someone for example is doing music and you don’t hate it is this kufr because of the Hadith that you must hate it in your heart otherwise there is no faith? I am worried because I need to love Allah

Sports, Entertainment and Music | August 23, 2015 2:45 am
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I wish to play basketball with friends but every member will have to pay a contribution for a pot money. The pot money will be given to the winner of the game. Is this gambling. Sometimes every member will pay for the rent of the court but i not sure about the pot money.
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I am interested in taking part in Muay thai as I wish to learn how to defend myself, I would not take part in bowing infront of the instructor or any other haram thing. Muay thai allow blows to the head however however participants can wear gloves and pads which can offer protection from strikes and the face is not hit. Is it halal for me to take part in Muay thai?