Q 3: What is the ruling on
saying, "Sadaqa Allah-ul-Azhim (True are the Words of Allah, the Ever-Great)" upon finishing the recitation of the Qur’an?
These words are true in themselves. However, mentioning them constantly on finishing reciting the Qur’an is a Bid‘ah (innovation in religion). As far as we know, this was not practiced during the lifetime of the Prophet (peace be upon him) or the Rightly-Guided Caliphs, despite their frequent recitation of the Qur’an. It is authentically reported that the Prophet (peace be upon him) said:
Anyone who does an action that is not in accordance with this matter of ours (Islam) will have it rejected.
(Part No. 4; Page No. 151) According to another narration:
Anyone who introduces anything into this matter of ours (Islam) that is not part of it will have it rejected.
May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.