Question 15: How many types of Bid‘ah (innovation in religion) are there? Is every Bid‘ah misguidance? If yes, are the diacritical marks used in the writing of the Qur’aan, such as Dammah (a small curl-like diacritic standing for the short vowel /u/), Fathah (a small diagonal line placed above a letter to stand for the short vowel /a/), Kasrah (a small diagonal line placed below a letter to stand for the short vowel /i/), Sukoon (a circle-shaped diacritic placed above a letter with no vowel), Nuqtah (dots and diuresis placed above and below Arabic letters to distinguish between them) or Nabrah (a carrier on which the letter Hamzah is placed in cases of Kasr) an act of Bid‘ah, as the Qur’aan was written during the lifetime of the Messenger of Allaah (peace be upon him) without any diacritical marks? Is the writing of these marks an act of Bid‘ah? Is this Bid‘ah misguidance?
Answer: Bid‘ah (i.e., invented or newly introduced thing) is divided into Bid‘ah in religion and ordinary Bid‘ah… read more here.