Aboo Taahir as-Salafee, Ahmad ibn Muhammad ibn Abroad, al Haafidh al-Kabeer, al-Asbahaatee. He was thiqah (precise, reliable and trustworthy), a haafidh (preserver). He died in the year 576H at the age of one-hundred and six.
See Tadhkirat-Huffaadh, 4/254.
[Taken from Footnotes from Foundations of the Sunnah of Imaam Ahmad (d. 241 AH) Edited and Footnotes by Aboo ‘Abdur-Rahmaan Fawwaaz Ahmad Zumarlee ]