Birth day celebration is not allowed in Islam-It is Bidah and imitation of non-muslims culture.
Summary of answer Muslims do not celebrate birthdays because it is a kind of innovation in religion which has no basis in the pure Shari`ah. Answer Related Praise be to Allah. The evidence in the Quran and Sunnah indicates that celebrating birthdays is a kind of bid’ah or innovation in religion, which has no basis in the pure Shari’ah. It is not permitted to accept invitations to birthday celebrations , because this involves supporting and encouraging bid’ah. Allah, may He be glorified and exalted, says (interpretation of the meaning): “Or have they partners with Allah (false gods) who have instituted for them a religion which Allah has not allowed…?” [Al-Shura 42:21] “Then We have put you (O Muhammad) on a plain way of (Our) commandment. So follow that, and follow not the desires of those who know not. Verily, they can avail you nothing against Allah (if He wants to punish you). Verily, the wrongdoers are protectors to one another, but Allah is the Protec...