Abu Amr al-Dani: Famous for accuracy and piety, scholar of Arabic, حافظ (protector) of the language, good writer in Quranic sciences
al-Khatib al-Baghdadi: Trustworthy
al-Dhahabi: One of the Imams, they spoke about him, and once: He was one of the most knowledgeable people of his time in the grammar of the Kufans and the most knowledgeable of them in the Quranic recitations, its famous, strange, and irregular forms