Alhumdulliah, I'm going to marry within a few days. Unfortunately, I had an event 10 days ago and I drunk wine unintentionally. As far as I know if anyone get drunk, for the next 40 days his/her prayer will not approved to Allah. Can anyone please tell me, will my marriage be approved by Allah or do I need to change my marriage date to after the 40 days?
look we are civilized people. this problem is off the table now. no need to wait for 40 days. you saad you didnt know you're drinking the wine.so its not on purpose. but if its really bother you, you can take a ghusl.
note: if you did it on purpose so you have to take a ghusl.dont do any holy actions like pray or else until you take a ghusl.
For instructions regarding how to perform ghusl, check this question.