Ahmad ibn Ishaq Ash'ari Qomi

Ahmad ibn Ishaq Ash'ari Qomi (Persian: احمد بن اسحاق اشعری قمی; died between 874 and 877 CE) was a Twelver Shia Muslim muhaddith (narrator of hadith) and a companion of the ninth, tenth and eleventh Shia Imams, Muhammad al-Jawad (c. 819–835), Ali al-Hadi (c. 835–868) and Hasan al-Askari (c. 868–874), and reportedly met the last Imam Muhammad al-Mahdi during his childhood. It is said that al-Hadi paid Ahmad's debts worth of thirty-thousand dinars, and he is also said to have been a delegate (wafid) from Qom by al-Askari.

Source: Wikipedia — Ahmad ibn Ishaq Ash'ari Qomi (CC BY-SA 4.0)