I have heard that saying "Sadaq Allah al-Azeem" after reciting the Quran is an innovation. Is that true?

Qur'an
I have heard that saying "Sadaq Allah al-Azeem" after reciting the Quran is an innovation. Is that true?
Zaid Alsalami, Shaykh Dr Zaid Alsalami is an Iraqi born scholar, raised in Australia. He obtained a BA from Al-Mustafa University, Qom, and an MA from the Islamic College in London. He also obtained a PhD from... Answered 4 years ago

Bismihi ta'ala

The description that has been mentioned in the holy Quran is "sadaqa Allah" (Surah Aal 'Imran, 95), and the part of ayatul-kursi "al-'Ali al-'Adheem" (Surah al-Baqarah, 255). 

Among Sunni jurists, they believe it is a good "bid'ah". For Shi'a jurists, its a general dhikr that is recommended to mention, whether it be sadaqa Allah al-'Adheem, or sadaqa Allah al-'Ali al-'Adheem, in which the latter would be better, due to the Quranic description. 

Unfortunately, some Sunni Muslims believe that when the Shia say "al-'Ali al-Adheem", they are referring to Imam Ali (a.s.), which is far from any truth. 

And Allah knows best.