Imam Sahib has narrated the complete chain of Imam A‘mash. Imam Abu Bakr, may Allah have mercy on him, says that (the narrator in this chain) ‘Ali bin Salat is unknown to me, and I do not know which land of Allah he belongs to. And it has occurred to me whether he met Sayyiduna Abu Ayyub, may Allah be pleased with him, or not? To my knowledge, only an opponent (stubborn, obstinate) or an ignorant person can use such (weak and unreliable) chains of narration as evidence.