السلام عليكم ورحمة الله وبركاته أحسن الله إليكم Ya ustadh, what is the evidence that say birthdays are bid’ah? What is the response to “We don’t associate any religion into this, but we would like to celebrate it”

Ustadh AbdulAziz al-Haqqan
Because it is a Eid and Islam denied all Eids except the Islamic Eids.