Why is birthday haram as most people see it as a worldy custom and not religious and no one knows its origin or celebrates it for that. Same with wearing Nike as sheikh Tahiri said no one wears it for the meaning. Why same rule dosent apply. It can’t be bidah as not seen as religious. JazakAllah Kha

Ustadh AbdulAziz al-Haqqan

A birthday is an ʿīd, a celebration returning on a fixed time, and the Sharīʿah cancelled every ʿīd except the two Eids, so it is judged by what it is and not by what people say they intend by it. Wearing a brand is not a recurring celebration, so the two cases are not alike.