Which of the following is known for his piety and memorized the Qur'an by the age of 7: Ahmad Nahavandi or Shah Waliullah Dehlawi?
Ahmad Nahavandi Ahmad ibn Muhammad al-Nahawandi was a Persian astronomer of the 8th and 9th centuries. His name indicates that he was from Nahavand, a city in Iran.
Ahmad al-Wafi Aḥmad al-Wafī (proper name: ʿAbdullāh ibn Muḥammad ibn Ismāʿīl, Arabic: عبد اللّه بن محمد بن إسماعيل‎ ‎ ; born 766-828 CE/149-212 AH in Salamiyah, Syria; Imamate 809-828 CE/193-212 AH) is the eighth Isma'ili Imam. He was the son and successor of the seventh Imam, Muhammad ibn Isma'il. He was called "al-Wafi" "true to his word".