Talha bin Ubaidullah:

The narration of Talha comes through two paths.

• The first path is through the narration of Hussain Al-Ashqar, who was weakened by many scholars including Al-Bukhari, Al-Zur’ah, Abu Hatim, and was accused of narrating a fabrications. See his biography in Tahtheeb Al-Tahtheeb.
• The second path is narrated by Al-Asimi through the path of Ghiyath bin Ibrahim, who has been greatly weakened and accused of narrating fabricated reports. See Tahtheeb Al-Tahtheeb.