Ref. No. 38 / 1198
In the name of Allah the most Gracious the most Merciful
The answer to your question is as follows:
Celebrating birthday is the way of non-Muslims. It has no basis in the shariah and sunnah. So you have to abstain from it. You have to create awareness about this false and baseless act. Muslims must understand that we are obliged to follow only the way and sunnah of our beloved prophet Muhammad (saws). Sahaba didn’t celebrate Prohpet’s birthday and Tabieen didn’t celebrate Sahaba’s birthdays. So how dare we celebrate our birthdays?
May Allah guide you to the right path! And give you taufeeq to follow only the Sunnah of our Prophet Muhammad (saws).
And Allah knows best
Darul Uloom Waqf Deoband