Ref. No. 37 / 1088
In the name of Allah the most Gracious the most Merciful
The answer to your question is as hereunder:
The bounty of Allah is showering on us each moment and we have to thank Allah for His uncountable bounties on us as much as we can.
It is not allowed to fix a date or time to remember Allah’s bounty on someone, because we don’t know if our actions were acceptable in the sight of Allah.
Thus, to celebrate one’s birthday, to believe in it, or exchanging gifts on this occasion etc. all are against the laws of Shariah. So, one is obliged to shun these actions.
And Allah knows best
Darul Uloom Waqf Deoband