أحمد بن حنبل
A.J. Wensinck mentions Ahmad ibn Hanbal as among at-Tirmidhi's teachers. However, Hoosen states that according to the most reliable sources, at-Tirmidhi never went to Baghdad, nor did he attend any lectures of Ahmad ibn Hanbal. Furthermore, at-Tirmidhi never directly narrates from Ahmad ibn Hanbal in his "Jami`".