Imam Wali ud din write this narration with reference to the Saheeh Muslim. It is not permissible to have an innovated celebration or feast, whether it’s celebrating the national day, mother’s day, labors’ day.. etc, it is not permissible in Islam. Books . Firstly, celebrating birthdays has pagan roots. This festival of celebrating the birthday of the Noble Prophet (Allah’s Grace & Peace be upon Him) is a Bid’ah Hasanah (good Innovation) and those arranging it will get blessing, since in such a celebration is found the expression of joy and happiness at the greatness and eminence of the Noble Prophet (Allah’s Grace & Peace be upon Him) and his birth”.Even Ibn Tay’miah said in his book “Necessity of the Right Path”, p. 266, 5th line from the bottom of that page, published by Dar Al-Hadith, the following:“As far as what people do during the Milad, either as a rival celebration to that which the Christian do during the time of Christ’s birthday or as an expression of their love and admiration and a sign of praise for the Noble Prophet (Allah’s Grace & Peace be upon Him), Allah Almighty will surely reward them for such Ijtihad”. User guide .
Durood -o- salam causes for the help of Allah Almighty in this world and here after. Even the Hindus have jayanti.