Assalamu Alaikum,there was a class party and I was invited,everyone was supposed to pay money and so I payed money to go there but after I had paid the money I decided not to go because there was Alcohol and Music but the money I paid they probably bought alcohol with it , so am I sinful for that as when I paid money i didn't intend it for alcohol and didn't realise that alcohol will be bought with itJazzakAllah Khair

All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.

As long as you paid it and you did not know that they would spend it on Haram (forbidden) things, there is no sin on you - Allah willing - if you did not intend to help them in Haram.

And you did well by refraining from going and participating in this evil party.

Allah knows best.