ANSWER:

No, this is not permissible as basically the party is for celebrating birthday. 

I’m invited to my Muslim freind’s son’s bithday party, i said i can’t attend it. She asked me not to join cake cutting session. Just join us on dinner after cake cutting n birthday related session end. Am i allowed to go after cake n birthday related stuff session jusn on meal after it?

Halal/Haram Matters |