I did not make a single mistake

Reference: Siyar A’laam an-Nubalaa v5 p258. al-Hifth – Ahammiyyatuhu, ‘Ajaa.ibuhu, Tareeqatuhu, Asbaabuhu p27

‘Aasim ibn an-Najwad (d. 128 AH) said:

I was ill for 2 years, and when I got better, I read the Qur.aan [from memory] and I did not make a single mistake.