Question 10: Some Islaamic institutions celebrate the Mawlid (the Prophet’s birthday). Did the Prophet (peace be upon him) do this, or did he order this to be done after his death?
Answer: Celebrating the occasion of the Mawlid is a forbidden Bidd`ah (innovation in religion), for there is no evidence from the Qur’aan or the Sunnah to support this act. It was not practiced by any of the four Rightly-Guided Caliphs. Moreover, the Prophet (peace be upon him) said: Anyone who introduces anything into this matter of ours (Islaam) that is not part of it will have it rejected. He (peace be upon him) also said: Adhere to my Sunnah (way) and the Sunnah of the righteous, Rightly-guided Caliphs; hold fast to it and bite onto it with your molars (i.e. cling firmly to it). Beware of newly-invented matters (in religion), for every newly-invented matter is a Bidd‘ah, and every Bidd‘ah is a Dalaalah (deviation from the right).… read more here.