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.
Ruwaym Abu Muhammad Ruwaym bin Ahmad was an early Muslim jurist, aescetic, saint and reciter of the Qur'an. He was one of the second generation of practitioners of Sufism.