Question: My son is now living with his mother who celebrates his birthday every year. This involves having a party that includes food and lighting a number of candles equal to the age of my son; every candle representing a year of his life. The child has to blow all these candles and then the party starts. What is the ruling on this?
Answer: It is not permissible to have a birthday party for anyone, as it constitutes a Bid`ah (innovation in religion). It is authentically reported that the Messenger (peace and blessings of Allaah be upon him) said… read more here.