It was narrated that ‘Aa’ishah (may Allaah be pleased with her) said: “The Messenger of Allaah (peace and blessings of Allaah be upon him) said: ‘Whoever innovates something in this matter of ours [i.e., Islam] that is not part of it will have it rejected.’” (Narrated by al-Bukhaari, Kitaab al-Sulh, 2499).
“And whatsoever the Messenger (Muhammad) gives you, take it; and whatsoever he forbids you, abstain (from it)” [al-Hashr 59:7]
The Prophet (peace and blessings of Allaah be upon him) said: “I urge you to adhere to my Sunnah [way] and the way of the Rightly-Guided khaleefahs. Adhere to it and cling tightly to it. And beware of newly-invented matters [in religion], for every newly-invented matter is an innovation and every innovation is a going-astray.” (Narrated by Abu Dawood, al-Sunnah, 3991; classed as saheeh by al-Albaani in Saheeh Abi Dawood, no. 3851).
“Follow what has been sent down unto you from your Lord, and follow not any awliyaa’ (protectors, helpers, etc.) besides Him. Little do you remember!” [al-A’raaf 7:3]
The Prophet (peace and blessings of Allaah be upon him) stated repeatedly that: “Every newly-invented thing is a bid’ah (innovation), every bid’ah is a going astray, and every going astray will be in the Fire.” (Reported by al-Nisaa’i in al-Sunan, Salaat al-‘Eedayn, Baab kayfa al-Khutbah).
The Prophet (peace and blessings of Allaah be upon him) used to say, when beginning a khutbah (sermon): “… The best of speech is the Book of Allaah and the best of guidance is the guidance of Muhammad. The worst of things are those which are newly-invented, and every innovation is a going astray…” (reported by Muslim, no. 867)
The Prophet Muhammad saw did not celebrate his birthday so why are you celebrating his? In Islam, there are only 2 eids, Eid-l Adha and Eid-l Fitr. Stay away from bidah.
Mawlid al-Nabi (the Prophet’s birthday) http://www.islamqa.com/en/ref/249
A Christian woman asks about the Prophet’s birthday and what it means to the Muslims http://www.islamqa.com/en/ref/13810
Celebrating birthdays is not allowed http://www.islamqa.com/en/ref/1027
In regard to those who say that celebrating Prophet’s birthday is bidah hasanah, there is no such thing as bidah hasanah in Islam.
Bid’ah Hasanah (“Good Innovations”) http://www.islamqa.com/en/ref/864
There is no such thing as bid’ah hasanah in Islam http://www.islamqa.com/en/ref/205